[PATCH 00/14] Removing dead code

[PATCH 00/14] Removing dead code

[Christian Dietrich]

Hi all!
       
As part of the VAMOS[0] research project at the University of Erlangen
we are looking at multiple integrity errors in linux' configuration
system.

I've been running a check on the whole sourcetree for
code block which are undead. This means they can't be deselected and
are always in the kernel if the enviroment of the block is
selected. They have often the form of

#ifdef ABC
....
#ifdef ABC
fooooo
#endif
#endif

Here the ifdefs of the inner block can be removed without any harm. At
this point we just checked the source code (for the undead), but we
want to do a crosscheck with the Kconfig for undead code blocks in the
future.

I build the patches against a vanilla kernel (v2.6.36-rc3) in order to
try if the kernel compiles with this patches.

Please keep me informed of this patch getting confirmed / merged so we
can keep track of it.

Regards

        Christian Dietrich

[0] http://vamos1.informatik.uni-erlangen.de/

Christian Dietrich (14):
  arch/arm: Removing undead ifdef __ASSEMBLY__
  arch/h8300: Removing dead ifdef __H8300_TLB_H__
  arch/parisc: Removing undead ifdef CONFIG_PA20
  arch/{s390,powerpc}: Removing undead ifdef __KERNEL__
  arch/x86: Removing undead ifdef ACPI/X86_IO_ACPI
  drivers/net: Removing undead ifdef CHELSIO_T1_1G
  drivers/scsi: Removing undead ifdef __ISAPNP__
  drivers/scsi: Removing undead ifdef CONFIG_PCI
  drivers/scsi: Removing undead ifdef REAL_DMA
  drivers/video: Removing undead ifdef ATAFB_FALCON
  drivers/video: Removing undead ifdef CONFIG_FB_MATROX_G
  include/linux: Removing undead ifdef __KERNEL__
  kernel/: Removing undead ifdef CONFIG_SMP
  kernel/: Removing undead ifdef CONFIG_DEBUG_LOCK_ALLOC

 arch/arm/mach-ixp23xx/include/mach/platform.h |    3 ---
 arch/h8300/include/asm/tlb.h                  |   13 -------------
 arch/parisc/kernel/unaligned.c                |    3 ---
 arch/powerpc/include/asm/processor.h          |    2 --
 arch/powerpc/include/asm/vdso_datapage.h      |    2 --
 arch/s390/include/asm/processor.h             |    4 ----
 arch/x86/kernel/early-quirks.c                |    2 --
 drivers/net/chelsio/subr.c                    |    2 --
 drivers/scsi/aha152x.c                        |    2 --
 drivers/scsi/aic7xxx_old.c                    |    2 --
 drivers/scsi/atari_NCR5380.c                  |    6 ------
 drivers/video/atafb.c                         |    2 --
 drivers/video/matrox/matroxfb_DAC1064.c       |    5 +----
 include/linux/socket.h                        |    6 +-----
 kernel/sched.c                                |    4 +---
 kernel/srcu.c                                 |    2 --
 16 files changed, 3 insertions(+), 57 deletions(-)

[PATCH 00/14] Removing dead code

[Christian Dietrich]

Hi all!
       
As part of the VAMOS[0] research project at the University of Erlangen
we are looking at multiple integrity errors in linux' configuration
system.

I've been running a check on the whole sourcetree for
code block which are undead. This means they can't be deselected and
are always in the kernel if the enviroment of the block is
selected. They have often the form of

#ifdef ABC
....
#ifdef ABC
fooooo
#endif
#endif

Here the ifdefs of the inner block can be removed without any harm. At
this point we just checked the source code (for the undead), but we
want to do a crosscheck with the Kconfig for undead code blocks in the
future.

I build the patches against a vanilla kernel (v2.6.36-rc3) in order to
try if the kernel compiles with this patches.

Please keep me informed of this patch getting confirmed / merged so we
can keep track of it.

Regards

        Christian Dietrich

[0] http://vamos1.informatik.uni-erlangen.de/

Christian Dietrich (14):
  arch/arm: Removing undead ifdef __ASSEMBLY__
  arch/h8300: Removing dead ifdef __H8300_TLB_H__
  arch/parisc: Removing undead ifdef CONFIG_PA20
  arch/{s390,powerpc}: Removing undead ifdef __KERNEL__
  arch/x86: Removing undead ifdef ACPI/X86_IO_ACPI
  drivers/net: Removing undead ifdef CHELSIO_T1_1G
  drivers/scsi: Removing undead ifdef __ISAPNP__
  drivers/scsi: Removing undead ifdef CONFIG_PCI
  drivers/scsi: Removing undead ifdef REAL_DMA
  drivers/video: Removing undead ifdef ATAFB_FALCON
  drivers/video: Removing undead ifdef CONFIG_FB_MATROX_G
  include/linux: Removing undead ifdef __KERNEL__
  kernel/: Removing undead ifdef CONFIG_SMP
  kernel/: Removing undead ifdef CONFIG_DEBUG_LOCK_ALLOC

 arch/arm/mach-ixp23xx/include/mach/platform.h |    3 ---
 arch/h8300/include/asm/tlb.h                  |   13 -------------
 arch/parisc/kernel/unaligned.c                |    3 ---
 arch/powerpc/include/asm/processor.h          |    2 --
 arch/powerpc/include/asm/vdso_datapage.h      |    2 --
 arch/s390/include/asm/processor.h             |    4 ----
 arch/x86/kernel/early-quirks.c                |    2 --
 drivers/net/chelsio/subr.c                    |    2 --
 drivers/scsi/aha152x.c                        |    2 --
 drivers/scsi/aic7xxx_old.c                    |    2 --
 drivers/scsi/atari_NCR5380.c                  |    6 ------
 drivers/video/atafb.c                         |    2 --
 drivers/video/matrox/matroxfb_DAC1064.c       |    5 +----
 include/linux/socket.h                        |    6 +-----
 kernel/sched.c                                |    4 +---
 kernel/srcu.c                                 |    2 --
 16 files changed, 3 insertions(+), 57 deletions(-)

[PATCH 01/14] arch/arm: Removing undead ifdef __ASSEMBLY__

[Christian Dietrich]

The __ASSEMBLY__ ifdef isn't necessary at this point, because it is
checked in an outer ifdef level already and has no effect here.

Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
---
 arch/arm/mach-ixp23xx/include/mach/platform.h |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mach-ixp23xx/include/mach/platform.h b/arch/arm/mach-ixp23xx/include/mach/platform.h
index db9d941..9f05ea4 100644
--- a/arch/arm/mach-ixp23xx/include/mach/platform.h
+++ b/arch/arm/mach-ixp23xx/include/mach/platform.h
@@ -43,7 +43,6 @@ extern struct sys_timer ixp23xx_timer;
 
 #define IXP23XX_UART_XTAL		14745600
 
-#ifndef __ASSEMBLY__
 /*
  * Is system memory on the XSI or CPP bus?
  */
@@ -51,7 +50,5 @@ static inline unsigned ixp23xx_cpp_boot(void)
 {
 	return (*IXP23XX_EXP_CFG0 & IXP23XX_EXP_CFG0_XSI_NOT_PRES);
 }
-#endif
-
 
 #endif
-- 
1.7.0.4

[PATCH 01/14] arch/arm: Removing undead ifdef __ASSEMBLY__

[Christian Dietrich]

The __ASSEMBLY__ ifdef isn't necessary at this point, because it is
checked in an outer ifdef level already and has no effect here.

Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
---
 arch/arm/mach-ixp23xx/include/mach/platform.h |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mach-ixp23xx/include/mach/platform.h b/arch/arm/mach-ixp23xx/include/mach/platform.h
index db9d941..9f05ea4 100644
--- a/arch/arm/mach-ixp23xx/include/mach/platform.h
+++ b/arch/arm/mach-ixp23xx/include/mach/platform.h
@@ -43,7 +43,6 @@ extern struct sys_timer ixp23xx_timer;
 
 #define IXP23XX_UART_XTAL		14745600
 
-#ifndef __ASSEMBLY__
 /*
  * Is system memory on the XSI or CPP bus?
  */
@@ -51,7 +50,5 @@ static inline unsigned ixp23xx_cpp_boot(void)
 {
 	return (*IXP23XX_EXP_CFG0 & IXP23XX_EXP_CFG0_XSI_NOT_PRES);
 }
-#endif
-
 
 #endif
-- 
1.7.0.4

[PATCH 02/14] arch/h8300: Removing dead ifdef __H8300_TLB_H__

[Christian Dietrich]

The nested __H8300_TLB_H__ include guard isn't necessary at this point,
because the symbol is always defined at this point and the block
content will always be removed.

Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
---
 arch/h8300/include/asm/tlb.h |   13 -------------
 1 files changed, 0 insertions(+), 13 deletions(-)

diff --git a/arch/h8300/include/asm/tlb.h b/arch/h8300/include/asm/tlb.h
index 3dea80a..6339a02 100644
--- a/arch/h8300/include/asm/tlb.h
+++ b/arch/h8300/include/asm/tlb.h
@@ -7,17 +7,4 @@
 
 #define tlb_flush(tlb)	do { } while(0)
 
-/* 
-  include/asm-h8300/tlb.h 
-*/
-
-#ifndef __H8300_TLB_H__
-#define __H8300_TLB_H__
-
-#define tlb_flush(tlb)	do { } while(0)
-
-#include <asm-generic/tlb.h>
-
-#endif
-
 #endif
-- 
1.7.0.4

[PATCH 03/14] arch/parisc: Removing undead ifdef CONFIG_PA20

[Christian Dietrich]

The CONFIG_PA20 ifdef isn't necessary at this point, because it is
checked in an outer ifdef level already and has no effect here.

Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
---
 arch/parisc/kernel/unaligned.c |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)

diff --git a/arch/parisc/kernel/unaligned.c b/arch/parisc/kernel/unaligned.c
index 92d977b..234e368 100644
--- a/arch/parisc/kernel/unaligned.c
+++ b/arch/parisc/kernel/unaligned.c
@@ -619,15 +619,12 @@ void handle_unaligned(struct pt_regs *regs)
 		flop=1;
 		ret = emulate_std(regs, R2(regs->iir),1);
 		break;
-
-#ifdef CONFIG_PA20
 	case OPCODE_LDD_L:
 		ret = emulate_ldd(regs, R2(regs->iir),0);
 		break;
 	case OPCODE_STD_L:
 		ret = emulate_std(regs, R2(regs->iir),0);
 		break;
-#endif
 	}
 #endif
 	switch (regs->iir & OPCODE3_MASK)
-- 
1.7.0.4

[PATCH 03/14] arch/parisc: Removing undead ifdef CONFIG_PA20

[Christian Dietrich]

The CONFIG_PA20 ifdef isn't necessary at this point, because it is
checked in an outer ifdef level already and has no effect here.

Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
---
 arch/parisc/kernel/unaligned.c |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)

diff --git a/arch/parisc/kernel/unaligned.c b/arch/parisc/kernel/unaligned.c
index 92d977b..234e368 100644
--- a/arch/parisc/kernel/unaligned.c
+++ b/arch/parisc/kernel/unaligned.c
@@ -619,15 +619,12 @@ void handle_unaligned(struct pt_regs *regs)
 		flop=1;
 		ret = emulate_std(regs, R2(regs->iir),1);
 		break;
-
-#ifdef CONFIG_PA20
 	case OPCODE_LDD_L:
 		ret = emulate_ldd(regs, R2(regs->iir),0);
 		break;
 	case OPCODE_STD_L:
 		ret = emulate_std(regs, R2(regs->iir),0);
 		break;
-#endif
 	}
 #endif
 	switch (regs->iir & OPCODE3_MASK)
-- 
1.7.0.4

[PATCH 04/14] arch/{s390,powerpc}: Removing undead ifdef __KERNEL__

[Christian Dietrich]

The __KERNEL__ ifdef isn't necessary at this point, because it is
checked in an outer ifdef level already and has no effect here.

Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
---
 arch/powerpc/include/asm/processor.h     |    2 --
 arch/powerpc/include/asm/vdso_datapage.h |    2 --
 arch/s390/include/asm/processor.h        |    4 ----
 3 files changed, 0 insertions(+), 8 deletions(-)

diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index 19c05b0..3defd7a 100644
--- a/arch/powerpc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
@@ -122,7 +122,6 @@ extern struct task_struct *last_task_used_spe;
 		TASK_UNMAPPED_BASE_USER32 : TASK_UNMAPPED_BASE_USER64 )
 #endif
 
-#ifdef __KERNEL__
 #ifdef __powerpc64__
 
 #define STACK_TOP_USER64 TASK_SIZE_USER64
@@ -139,7 +138,6 @@ extern struct task_struct *last_task_used_spe;
 #define STACK_TOP_MAX	STACK_TOP
 
 #endif /* __powerpc64__ */
-#endif /* __KERNEL__ */
 
 typedef struct {
 	unsigned long seg;
diff --git a/arch/powerpc/include/asm/vdso_datapage.h b/arch/powerpc/include/asm/vdso_datapage.h
index 08679c5..25e3922 100644
--- a/arch/powerpc/include/asm/vdso_datapage.h
+++ b/arch/powerpc/include/asm/vdso_datapage.h
@@ -116,9 +116,7 @@ struct vdso_data {
 
 #endif /* CONFIG_PPC64 */
 
-#ifdef __KERNEL__
 extern struct vdso_data *vdso_data;
-#endif
 
 #endif /* __ASSEMBLY__ */
 
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
index 73e2598..0e2a436 100644
--- a/arch/s390/include/asm/processor.h
+++ b/arch/s390/include/asm/processor.h
@@ -52,8 +52,6 @@ extern int get_cpu_capability(unsigned int *);
 
 #endif /* __s390x__ */
 
-#ifdef __KERNEL__
-
 #ifndef __s390x__
 #define STACK_TOP		(1UL << 31)
 #define STACK_TOP_MAX		(1UL << 31)
@@ -63,8 +61,6 @@ extern int get_cpu_capability(unsigned int *);
 #endif /* __s390x__ */
 
 
-#endif
-
 #define HAVE_ARCH_PICK_MMAP_LAYOUT
 
 typedef struct {
-- 
1.7.0.4

[PATCH 05/14] arch/x86: Removing undead ifdef ACPI/X86_IO_ACPI

[Christian Dietrich]

The ACPI/X86_IO_ACPI ifdef isn't necessary at this point, because it is
checked in an outer ifdef level already and has no effect here.

Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
---
 arch/x86/kernel/early-quirks.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index e5cc7e8..e4bd78c 100644
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -98,7 +98,6 @@ static void __init nvidia_bugs(int num, int slot, int func)
 }
 
 #if defined(CONFIG_ACPI) && defined(CONFIG_X86_IO_APIC)
-#if defined(CONFIG_ACPI) && defined(CONFIG_X86_IO_APIC)
 static u32 __init ati_ixp4x0_rev(int num, int slot, int func)
 {
 	u32 d;
@@ -116,7 +115,6 @@ static u32 __init ati_ixp4x0_rev(int num, int slot, int func)
 	d &= 0xff;
 	return d;
 }
-#endif
 
 static void __init ati_bugs(int num, int slot, int func)
 {
-- 
1.7.0.4

[PATCH 06/14] drivers/net: Removing undead ifdef CHELSIO_T1_1G

[Christian Dietrich]

The CHELSIO_T1_1G ifdef isn't necessary at this point, because it is
checked in an outer ifdef level already and has no effect here.

Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
---
 drivers/net/chelsio/subr.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/drivers/net/chelsio/subr.c b/drivers/net/chelsio/subr.c
index 599d178..63ebf76 100644
--- a/drivers/net/chelsio/subr.c
+++ b/drivers/net/chelsio/subr.c
@@ -314,14 +314,12 @@ static int mi1_mdio_write(struct net_device *dev, int phy_addr, int mmd_addr,
 	return 0;
 }
 
-#if defined(CONFIG_CHELSIO_T1_1G)
 static const struct mdio_ops mi1_mdio_ops = {
 	.init = mi1_mdio_init,
 	.read = mi1_mdio_read,
 	.write = mi1_mdio_write,
 	.mode_support = MDIO_SUPPORTS_C22
 };
-#endif
 
 #endif
 
-- 
1.7.0.4

[PATCH 06/14] drivers/net: Removing undead ifdef CHELSIO_T1_1G

[Christian Dietrich]

The CHELSIO_T1_1G ifdef isn't necessary at this point, because it is
checked in an outer ifdef level already and has no effect here.

Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
---
 drivers/net/chelsio/subr.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/drivers/net/chelsio/subr.c b/drivers/net/chelsio/subr.c
index 599d178..63ebf76 100644
--- a/drivers/net/chelsio/subr.c
+++ b/drivers/net/chelsio/subr.c
@@ -314,14 +314,12 @@ static int mi1_mdio_write(struct net_device *dev, int phy_addr, int mmd_addr,
 	return 0;
 }
 
-#if defined(CONFIG_CHELSIO_T1_1G)
 static const struct mdio_ops mi1_mdio_ops = {
 	.init = mi1_mdio_init,
 	.read = mi1_mdio_read,
 	.write = mi1_mdio_write,
 	.mode_support = MDIO_SUPPORTS_C22
 };
-#endif
 
 #endif
 
-- 
1.7.0.4

[PATCH 07/14] drivers/scsi: Removing undead ifdef __ISAPNP__

[Christian Dietrich]

The __ISAPNP__ ifdef isn't necessary at this point, because it is
checked in an outer ifdef level already and has no effect here.

Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
---
 drivers/scsi/aha152x.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/aha152x.c b/drivers/scsi/aha152x.c
index 8eab858..08f59da 100644
--- a/drivers/scsi/aha152x.c
+++ b/drivers/scsi/aha152x.c
@@ -3806,9 +3806,7 @@ static int __init aha152x_init(void)
 #if defined(AHA152X_DEBUG)
 			setup[setup_count].debug       = DEBUG_DEFAULT;
 #endif
-#if defined(__ISAPNP__)
 			pnpdev[setup_count]            = dev;
-#endif
 			printk (KERN_INFO
 				"aha152x: found ISAPnP adapter at io=0x%03x, irq=%d\n",
 				setup[setup_count].io_port, setup[setup_count].irq);
-- 
1.7.0.4

[PATCH 08/14] drivers/scsi: Removing undead ifdef CONFIG_PCI

[Christian Dietrich]

The CONFIG_PCI ifdef isn't necessary at this point, because it is
checked in an outer ifdef level already and has no effect here.

Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
---
 drivers/scsi/aic7xxx_old.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/aic7xxx_old.c b/drivers/scsi/aic7xxx_old.c
index 93984c9..c0953be 100644
--- a/drivers/scsi/aic7xxx_old.c
+++ b/drivers/scsi/aic7xxx_old.c
@@ -9655,9 +9655,7 @@ aic7xxx_detect(struct scsi_host_template *template)
           found++;
 	  continue;
 skip_pci_controller:
-#ifdef CONFIG_PCI
 	  pci_release_regions(temp_p->pdev);
-#endif
 	  kfree(temp_p);
         }  /* Found an Adaptec PCI device. */
         else /* Well, we found one, but we couldn't get any memory */
-- 
1.7.0.4

[PATCH 09/14] drivers/scsi: Removing undead ifdef REAL_DMA

[Christian Dietrich]

The REAL_DMA ifdef isn't necessary at this point, because it is
checked in an outer ifdef level already and has no effect here.

Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
---
 drivers/scsi/atari_NCR5380.c |    6 ------
 1 files changed, 0 insertions(+), 6 deletions(-)

diff --git a/drivers/scsi/atari_NCR5380.c b/drivers/scsi/atari_NCR5380.c
index 158ebc3..7edec2d 100644
--- a/drivers/scsi/atari_NCR5380.c
+++ b/drivers/scsi/atari_NCR5380.c
@@ -1942,9 +1942,7 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance,
 
 	NCR5380_write(TARGET_COMMAND_REG, PHASE_SR_TO_TCR(p));
 
-#ifdef REAL_DMA
 	NCR5380_write(MODE_REG, MR_BASE | MR_DMA_MODE | MR_ENABLE_EOP_INTR | MR_MONITOR_BSY);
-#endif /* def REAL_DMA  */
 
 	if (IS_A_TT()) {
 		/* On the Medusa, it is a must to initialize the DMA before
@@ -2101,16 +2099,12 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
 						cmd->scsi_done(cmd);
 						/* XXX - need to source or sink data here, as appropriate */
 					} else {
-#ifdef REAL_DMA
 						/* ++roman: When using real DMA,
 						 * information_transfer() should return after
 						 * starting DMA since it has nothing more to
 						 * do.
 						 */
 						return;
-#else
-						cmd->SCp.this_residual -= transfersize - len;
-#endif
 					}
 				} else
 #endif /* defined(REAL_DMA) */
-- 
1.7.0.4

[PATCH 10/14] drivers/video: Removing undead ifdef ATAFB_FALCON

[Christian Dietrich]

The ATAFB_FALCON ifdef isn't necessary at this point, because it is
checked in an outer ifdef level already and has no effect here.

Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
---
 drivers/video/atafb.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/drivers/video/atafb.c b/drivers/video/atafb.c
index f3aada2..5b2b5ef 100644
--- a/drivers/video/atafb.c
+++ b/drivers/video/atafb.c
@@ -1718,11 +1718,9 @@ static int falcon_setcolreg(unsigned int regno, unsigned int red,
 			(((red & 0xe000) >> 13) | ((red & 0x1000) >> 12) << 8) |
 			(((green & 0xe000) >> 13) | ((green & 0x1000) >> 12) << 4) |
 			((blue & 0xe000) >> 13) | ((blue & 0x1000) >> 12);
-#ifdef ATAFB_FALCON
 		((u32 *)info->pseudo_palette)[regno] = ((red & 0xf800) |
 						       ((green & 0xfc00) >> 5) |
 						       ((blue & 0xf800) >> 11));
-#endif
 	}
 	return 0;
 }
-- 
1.7.0.4

[PATCH 11/14] drivers/video: Removing undead ifdef CONFIG_FB_MATROX_G

[Christian Dietrich]

The CONFIG_FB_MATROX_G ifdef isn't necessary at this point, because it
is checked in an outer ifdef level already and has no effect here.

Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
---
 drivers/video/matrox/matroxfb_DAC1064.c |    5 +----
 1 files changed, 1 insertions(+), 4 deletions(-)

diff --git a/drivers/video/matrox/matroxfb_DAC1064.c b/drivers/video/matrox/matroxfb_DAC1064.c
index f9fa0fd..1717623 100644
--- a/drivers/video/matrox/matroxfb_DAC1064.c
+++ b/drivers/video/matrox/matroxfb_DAC1064.c
@@ -869,12 +869,9 @@ static int MGAG100_preinit(struct matrox_fb_info *minfo)
 	minfo->capable.plnwt = minfo->devflags.accelerator == FB_ACCEL_MATROX_MGAG100
 			? minfo->devflags.sgram : 1;
 
-#ifdef CONFIG_FB_MATROX_G
 	if (minfo->devflags.g450dac) {
 		minfo->outputs[0].output = &g450out;
-	} else
-#endif
-	{
+	} else {
 		minfo->outputs[0].output = &m1064;
 	}
 	minfo->outputs[0].src = minfo->outputs[0].default_src;
-- 
1.7.0.4

[PATCH 11/14] drivers/video: Removing undead ifdef

[Christian Dietrich]

The CONFIG_FB_MATROX_G ifdef isn't necessary at this point, because it
is checked in an outer ifdef level already and has no effect here.

Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
---
 drivers/video/matrox/matroxfb_DAC1064.c |    5 +----
 1 files changed, 1 insertions(+), 4 deletions(-)

diff --git a/drivers/video/matrox/matroxfb_DAC1064.c b/drivers/video/matrox/matroxfb_DAC1064.c
index f9fa0fd..1717623 100644
--- a/drivers/video/matrox/matroxfb_DAC1064.c
+++ b/drivers/video/matrox/matroxfb_DAC1064.c
@@ -869,12 +869,9 @@ static int MGAG100_preinit(struct matrox_fb_info *minfo)
 	minfo->capable.plnwt = minfo->devflags.accelerator = FB_ACCEL_MATROX_MGAG100
 			? minfo->devflags.sgram : 1;
 
-#ifdef CONFIG_FB_MATROX_G
 	if (minfo->devflags.g450dac) {
 		minfo->outputs[0].output = &g450out;
-	} else
-#endif
-	{
+	} else {
 		minfo->outputs[0].output = &m1064;
 	}
 	minfo->outputs[0].src = minfo->outputs[0].default_src;
-- 
1.7.0.4

[PATCH 12/14] include/linux: Removing undead ifdef __KERNEL__

[Christian Dietrich]

The __KERNEL__ ifdef isn't necessary at this point, because it is
checked in an outer ifdef level already and has no effect here.

Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
---
 include/linux/socket.h |    6 +-----
 1 files changed, 1 insertions(+), 5 deletions(-)

diff --git a/include/linux/socket.h b/include/linux/socket.h
index a2fada9..09753f5 100644
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -30,12 +30,10 @@ struct cred;
 #define __sockaddr_check_size(size)	\
 	BUILD_BUG_ON(((size) > sizeof(struct __kernel_sockaddr_storage)))
 
-#ifdef __KERNEL__
 # ifdef CONFIG_PROC_FS
 struct seq_file;
 extern void socket_seq_show(struct seq_file *seq);
 # endif
-#endif /* __KERNEL__ */
 
 typedef unsigned short	sa_family_t;
 
@@ -311,7 +309,6 @@ struct ucred {
 /* IPX options */
 #define IPX_TYPE	1
 
-#ifdef __KERNEL__
 extern void cred_to_ucred(struct pid *pid, const struct cred *cred, struct ucred *ucred);
 
 extern int memcpy_fromiovec(unsigned char *kdata, struct iovec *iov, int len);
@@ -334,6 +331,5 @@ struct timespec;
 
 extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen,
 			  unsigned int flags, struct timespec *timeout);
-#endif
-#endif /* not kernel and not glibc */
+#endif /* __KERNEL__ */
 #endif /* _LINUX_SOCKET_H */
-- 
1.7.0.4

[PATCH 13/14] kernel/: Removing undead ifdef CONFIG_SMP

[Christian Dietrich]

The CONFIG_SMP ifdef isn't necessary at this point, because it is
checked in an outer ifdef level already and has no effect here.

Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
---
 kernel/sched.c |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diff --git a/kernel/sched.c b/kernel/sched.c
index 09b574e..8eef8e5 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -426,9 +426,7 @@ struct root_domain {
 	 */
 	cpumask_var_t rto_mask;
 	atomic_t rto_count;
-#ifdef CONFIG_SMP
 	struct cpupri cpupri;
-#endif
 };
 
 /*
@@ -437,7 +435,7 @@ struct root_domain {
  */
 static struct root_domain def_root_domain;
 
-#endif
+#endif /* CONFIG_SMP */
 
 /*
  * This is the main, per-CPU runqueue data structure.
-- 
1.7.0.4

[PATCH 14/14] kernel/: Removing undead ifdef CONFIG_DEBUG_LOCK_ALLOC

[Christian Dietrich]

The CONFIG_DEBUG_LOCK_ALLOC ifdef isn't necessary at this point, because it is
checked in an outer ifdef level already and has no effect here.

Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
---
 kernel/srcu.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/kernel/srcu.c b/kernel/srcu.c
index 2980da3..c71e075 100644
--- a/kernel/srcu.c
+++ b/kernel/srcu.c
@@ -46,11 +46,9 @@ static int init_srcu_struct_fields(struct srcu_struct *sp)
 int __init_srcu_struct(struct srcu_struct *sp, const char *name,
 		       struct lock_class_key *key)
 {
-#ifdef CONFIG_DEBUG_LOCK_ALLOC
 	/* Don't re-initialize a lock while it is held. */
 	debug_check_no_locks_freed((void *)sp, sizeof(*sp));
 	lockdep_init_map(&sp->dep_map, name, key, 0);
-#endif /* #ifdef CONFIG_DEBUG_LOCK_ALLOC */
 	return init_srcu_struct_fields(sp);
 }
 EXPORT_SYMBOL_GPL(__init_srcu_struct);
-- 
1.7.0.4

Re: [PATCH 05/14] arch/x86: Removing undead ifdef ACPI/X86_IO_ACPI

[Borislav Petkov]

From: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
Date: Mon, Sep 06, 2010 at 10:36:18AM -0400

> The ACPI/X86_IO_ACPI ifdef isn't necessary at this point, because it is
> checked in an outer ifdef level already and has no effect here.
> 
> Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>

Acked-by: Borislav Petkov <borislav.petkov@amd.com>

-- 
Regards/Gruss,
Boris.

Advanced Micro Devices GmbH
Einsteinring 24, 85609 Dornach
General Managers: Alberto Bozzo, Andrew Bowd
Registration: Dornach, Gemeinde Aschheim, Landkreis Muenchen
Registergericht Muenchen, HRB Nr. 43632

Re: [PATCH 14/14] kernel/: Removing undead ifdef CONFIG_DEBUG_LOCK_ALLOC

[Paul E. McKenney]

On Mon, Sep 06, 2010 at 04:37:12PM +0200, Christian Dietrich wrote:
> The CONFIG_DEBUG_LOCK_ALLOC ifdef isn't necessary at this point, because it is
> checked in an outer ifdef level already and has no effect here.

Good catch, queued!

							Thanx, Paul

> Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
> ---
>  kernel/srcu.c |    2 --
>  1 files changed, 0 insertions(+), 2 deletions(-)
> 
> diff --git a/kernel/srcu.c b/kernel/srcu.c
> index 2980da3..c71e075 100644
> --- a/kernel/srcu.c
> +++ b/kernel/srcu.c
> @@ -46,11 +46,9 @@ static int init_srcu_struct_fields(struct srcu_struct *sp)
>  int __init_srcu_struct(struct srcu_struct *sp, const char *name,
>  		       struct lock_class_key *key)
>  {
> -#ifdef CONFIG_DEBUG_LOCK_ALLOC
>  	/* Don't re-initialize a lock while it is held. */
>  	debug_check_no_locks_freed((void *)sp, sizeof(*sp));
>  	lockdep_init_map(&sp->dep_map, name, key, 0);
> -#endif /* #ifdef CONFIG_DEBUG_LOCK_ALLOC */
>  	return init_srcu_struct_fields(sp);
>  }
>  EXPORT_SYMBOL_GPL(__init_srcu_struct);
> -- 
> 1.7.0.4
> 

Re: [PATCH 12/14] include/linux: Removing undead ifdef __KERNEL__

[Cyrill Gorcunov]

On Mon, Sep 06, 2010 at 04:36:59PM +0200, Christian Dietrich wrote:
> The __KERNEL__ ifdef isn't necessary at this point, because it is
> checked in an outer ifdef level already and has no effect here.
> 
> Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
> ---

The origin looks weird indeed. So I presume it's here for historical reasons.
Well, from git log it shows a lot of glibc tricks were here. And the former
top __KERNEL__ is by commit 9c501935a3cdcf6b1d35aaee3aa11c7a7051a305 so

Reviewed-by: Cyrill Gorcunov <gorcunov@gmail.com>

Thanks Christian

	-- Cyrill

Re: [PATCH 02/14] arch/h8300: Removing dead ifdef __H8300_TLB_H__

[Andreas Schwab]

Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de> writes:

> The nested __H8300_TLB_H__ include guard isn't necessary at this point,
> because the symbol is always defined at this point and the block
> content will always be removed.
>
> Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
> ---
>  arch/h8300/include/asm/tlb.h |   13 -------------
>  1 files changed, 0 insertions(+), 13 deletions(-)
>
> diff --git a/arch/h8300/include/asm/tlb.h b/arch/h8300/include/asm/tlb.h
> index 3dea80a..6339a02 100644
> --- a/arch/h8300/include/asm/tlb.h
> +++ b/arch/h8300/include/asm/tlb.h
> @@ -7,17 +7,4 @@
>  
>  #define tlb_flush(tlb)	do { } while(0)
>  
> -/* 
> -  include/asm-h8300/tlb.h 
> -*/
> -
> -#ifndef __H8300_TLB_H__
> -#define __H8300_TLB_H__
> -
> -#define tlb_flush(tlb)	do { } while(0)
> -
> -#include <asm-generic/tlb.h>
> -
> -#endif
> -
>  #endif

Looks like someone patched the file twice with the same patch, see
<http://git.kernel.org/?p=linux/kernel/git/tglx/history.git;a=commitdiff;h=398f579808cb74dd4c418df72ff8ff5971038e4f#patch24>

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

Re: [PATCH 06/14] drivers/net: Removing undead ifdef CHELSIO_T1_1G

[David Miller]

From: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
Date: Mon, 6 Sep 2010 16:36:25 +0200

> The CHELSIO_T1_1G ifdef isn't necessary at this point, because it is
> checked in an outer ifdef level already and has no effect here.
> 
> Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>

Applied.

Re: [PATCH 11/14] drivers/video: Removing undead ifdef CONFIG_FB_MATROX_G

[Jean Delvare]

On Mon, 6 Sep 2010 16:36:53 +0200, Christian Dietrich wrote:
> The CONFIG_FB_MATROX_G ifdef isn't necessary at this point, because it
> is checked in an outer ifdef level already and has no effect here.
> 
> Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
> ---
>  drivers/video/matrox/matroxfb_DAC1064.c |    5 +----
>  1 files changed, 1 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/video/matrox/matroxfb_DAC1064.c b/drivers/video/matrox/matroxfb_DAC1064.c
> index f9fa0fd..1717623 100644
> --- a/drivers/video/matrox/matroxfb_DAC1064.c
> +++ b/drivers/video/matrox/matroxfb_DAC1064.c
> @@ -869,12 +869,9 @@ static int MGAG100_preinit(struct matrox_fb_info *minfo)
>  	minfo->capable.plnwt = minfo->devflags.accelerator == FB_ACCEL_MATROX_MGAG100
>  			? minfo->devflags.sgram : 1;
>  
> -#ifdef CONFIG_FB_MATROX_G
>  	if (minfo->devflags.g450dac) {
>  		minfo->outputs[0].output = &g450out;
> -	} else
> -#endif
> -	{
> +	} else {
>  		minfo->outputs[0].output = &m1064;
>  	}
>  	minfo->outputs[0].src = minfo->outputs[0].default_src;

Indeed.

Acked-by: Jean Delvare <khali@linux-fr.org>

-- 
Jean Delvare

Re: [PATCH 11/14] drivers/video: Removing undead ifdef

[Jean Delvare]

On Mon, 6 Sep 2010 16:36:53 +0200, Christian Dietrich wrote:
> The CONFIG_FB_MATROX_G ifdef isn't necessary at this point, because it
> is checked in an outer ifdef level already and has no effect here.
> 
> Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
> ---
>  drivers/video/matrox/matroxfb_DAC1064.c |    5 +----
>  1 files changed, 1 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/video/matrox/matroxfb_DAC1064.c b/drivers/video/matrox/matroxfb_DAC1064.c
> index f9fa0fd..1717623 100644
> --- a/drivers/video/matrox/matroxfb_DAC1064.c
> +++ b/drivers/video/matrox/matroxfb_DAC1064.c
> @@ -869,12 +869,9 @@ static int MGAG100_preinit(struct matrox_fb_info *minfo)
>  	minfo->capable.plnwt = minfo->devflags.accelerator = FB_ACCEL_MATROX_MGAG100
>  			? minfo->devflags.sgram : 1;
>  
> -#ifdef CONFIG_FB_MATROX_G
>  	if (minfo->devflags.g450dac) {
>  		minfo->outputs[0].output = &g450out;
> -	} else
> -#endif
> -	{
> +	} else {
>  		minfo->outputs[0].output = &m1064;
>  	}
>  	minfo->outputs[0].src = minfo->outputs[0].default_src;

Indeed.

Acked-by: Jean Delvare <khali@linux-fr.org>

-- 
Jean Delvare

[tip:x86/cleanups] x86: Remove unnecessary #ifdef ACPI/X86_IO_ACPI

[tip-bot for Christian Dietrich]

Commit-ID:  0f1cf415f00286a38f5ce35b459342dbfc895b50
Gitweb:     http://git.kernel.org/tip/0f1cf415f00286a38f5ce35b459342dbfc895b50
Author:     Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
AuthorDate: Mon, 6 Sep 2010 16:36:18 +0200
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Wed, 8 Sep 2010 08:14:02 +0200

x86: Remove unnecessary #ifdef ACPI/X86_IO_ACPI

The ACPI/X86_IO_ACPI ifdef isn't necessary at this point,
because it is checked in an outer ifdef level already and has no
effect here.

Cleanup only, no functional effect.

Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
Acked-by: Borislav Petkov <borislav.petkov@amd.com>
Cc: vamos-dev@i4.informatik.uni-erlangen.de
LKML-Reference: <d4376e6d79b8dc0f89a4b3ce4a880904a7b93ead.1283782701.git.qy03fugy@stud.informatik.uni-erlangen.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 arch/x86/kernel/early-quirks.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index e5cc7e8..e4bd78c 100644
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -98,7 +98,6 @@ static void __init nvidia_bugs(int num, int slot, int func)
 }
 
 #if defined(CONFIG_ACPI) && defined(CONFIG_X86_IO_APIC)
-#if defined(CONFIG_ACPI) && defined(CONFIG_X86_IO_APIC)
 static u32 __init ati_ixp4x0_rev(int num, int slot, int func)
 {
 	u32 d;
@@ -116,7 +115,6 @@ static u32 __init ati_ixp4x0_rev(int num, int slot, int func)
 	d &= 0xff;
 	return d;
 }
-#endif
 
 static void __init ati_bugs(int num, int slot, int func)
 {

[tip:sched/core] sched: Remove unnecessary #ifdef CONFIG_SMP

[tip-bot for Christian Dietrich]

Commit-ID:  ed2d372c0738386b8a184a6a6bea9c16df6ffb68
Gitweb:     http://git.kernel.org/tip/ed2d372c0738386b8a184a6a6bea9c16df6ffb68
Author:     Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
AuthorDate: Mon, 6 Sep 2010 16:37:05 +0200
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Wed, 8 Sep 2010 08:14:20 +0200

sched: Remove unnecessary #ifdef CONFIG_SMP

The CONFIG_SMP ifdef isn't necessary at this point, because it
is checked in an outer ifdef level already and has no effect
here.

Cleanup only, no functional effect.

Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
Cc: vamos-dev@i4.informatik.uni-erlangen.de
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Tejun Heo <tj@kernel.org>
LKML-Reference: <7a3a39ef3f765a4473cb026b1f204059568a7098.1283782701.git.qy03fugy@stud.informatik.uni-erlangen.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 kernel/sched.c |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diff --git a/kernel/sched.c b/kernel/sched.c
index 09b574e..8eef8e5 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -426,9 +426,7 @@ struct root_domain {
 	 */
 	cpumask_var_t rto_mask;
 	atomic_t rto_count;
-#ifdef CONFIG_SMP
 	struct cpupri cpupri;
-#endif
 };
 
 /*
@@ -437,7 +435,7 @@ struct root_domain {
  */
 static struct root_domain def_root_domain;
 
-#endif
+#endif /* CONFIG_SMP */
 
 /*
  * This is the main, per-CPU runqueue data structure.

Re: [PATCH 03/14] arch/parisc: Removing undead ifdef CONFIG_PA20

[Kyle McMartin]

On Mon, Sep 06, 2010 at 04:36:06PM +0200, Christian Dietrich wrote:
> The CONFIG_PA20 ifdef isn't necessary at this point, because it is
> checked in an outer ifdef level already and has no effect here.
> 

Looks good, applied, thanks.
-- Kyle

> Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
> ---
>  arch/parisc/kernel/unaligned.c |    3 ---
>  1 files changed, 0 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/parisc/kernel/unaligned.c b/arch/parisc/kernel/unaligned.c
> index 92d977b..234e368 100644
> --- a/arch/parisc/kernel/unaligned.c
> +++ b/arch/parisc/kernel/unaligned.c
> @@ -619,15 +619,12 @@ void handle_unaligned(struct pt_regs *regs)
>  		flop=1;
>  		ret = emulate_std(regs, R2(regs->iir),1);
>  		break;
> -
> -#ifdef CONFIG_PA20
>  	case OPCODE_LDD_L:
>  		ret = emulate_ldd(regs, R2(regs->iir),0);
>  		break;
>  	case OPCODE_STD_L:
>  		ret = emulate_std(regs, R2(regs->iir),0);
>  		break;
> -#endif
>  	}
>  #endif
>  	switch (regs->iir & OPCODE3_MASK)
> -- 
> 1.7.0.4
> 
> 

Re: [PATCH 10/14] drivers/video: Removing undead ifdef ATAFB_FALCON

[Krzysztof Helt]

On Mon, 6 Sep 2010 16:36:47 +0200
Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de> wrote:

> The ATAFB_FALCON ifdef isn't necessary at this point, because it is
> checked in an outer ifdef level already and has no effect here.
> 
> Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
> ---

Right.

Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>

Re: [PATCH 10/14] drivers/video: Removing undead ifdef ATAFB_FALCON

[Geert Uytterhoeven]

On Fri, Sep 10, 2010 at 19:50, Krzysztof Helt <krzysztof.h1@wp.pl> wrote:
> On Mon, 6 Sep 2010 16:36:47 +0200
> Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de> wrote:
>
>> The ATAFB_FALCON ifdef isn't necessary at this point, because it is
>> checked in an outer ifdef level already and has no effect here.
>>
>> Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de>
>
> Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>

Applied to m68k tree, queued for 2.6.37.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds