* [PATCH 1/2] powerpc/math_emu/efp: Include module.h
@ 2022-09-02 9:27 Christophe Leroy
2022-09-02 9:27 ` [PATCH 2/2] powerpc/math-emu: Remove -w build flag and fix warnings Christophe Leroy
0 siblings, 1 reply; 2+ messages in thread
From: Christophe Leroy @ 2022-09-02 9:27 UTC (permalink / raw)
To: Michael Ellerman, Nicholas Piggin
Cc: Christophe Leroy, linux-kernel, linuxppc-dev, kernel test robot,
Nathan Chancellor
From: Nathan Chancellor <nathan@kernel.org>
When building with a recent version of clang, there are a couple of
errors around the call to module_init():
arch/powerpc/math-emu/math_efp.c:927:1: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
module_init(spe_mathemu_init);
^
int
arch/powerpc/math-emu/math_efp.c:927:13: error: a parameter list without types is only allowed in a function definition
module_init(spe_mathemu_init);
^
2 errors generated.
module_init() is a macro, which is not getting expanded because module.h
is not included in this file. Add the include so that the macro can
expand properly, clearing up the build failure.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Fixes: ac6f120369ff ("powerpc/85xx: Workaroudn e500 CPU erratum A005")
[chleroy: added fixes tag]
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
---
arch/powerpc/math-emu/math_efp.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/math-emu/math_efp.c b/arch/powerpc/math-emu/math_efp.c
index 39b84e7452e1..aa3bb8da1cb9 100644
--- a/arch/powerpc/math-emu/math_efp.c
+++ b/arch/powerpc/math-emu/math_efp.c
@@ -17,6 +17,7 @@
#include <linux/types.h>
#include <linux/prctl.h>
+#include <linux/module.h>
#include <linux/uaccess.h>
#include <asm/reg.h>
--
2.37.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH 2/2] powerpc/math-emu: Remove -w build flag and fix warnings
2022-09-02 9:27 [PATCH 1/2] powerpc/math_emu/efp: Include module.h Christophe Leroy
@ 2022-09-02 9:27 ` Christophe Leroy
0 siblings, 0 replies; 2+ messages in thread
From: Christophe Leroy @ 2022-09-02 9:27 UTC (permalink / raw)
To: Michael Ellerman, Nicholas Piggin
Cc: Christophe Leroy, linux-kernel, linuxppc-dev, Nathan Chancellor
As reported by Nathan, the module_init() macro was not taken into
account because the header was missing. That means spe_mathemu_init()
was never called.
This should have been detected by gcc at build time, but due to
'-w' flag it went undetected.
Removing that flag leads to many warnings hence errors.
Fix those warnings then remove the -w flag.
Reported-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
---
arch/powerpc/math-emu/Makefile | 2 --
arch/powerpc/math-emu/math_efp.c | 57 +++++++++++++++++---------------
2 files changed, 30 insertions(+), 29 deletions(-)
diff --git a/arch/powerpc/math-emu/Makefile b/arch/powerpc/math-emu/Makefile
index a8794032f15f..26fef2e5672e 100644
--- a/arch/powerpc/math-emu/Makefile
+++ b/arch/powerpc/math-emu/Makefile
@@ -16,5 +16,3 @@ obj-$(CONFIG_SPE) += math_efp.o
CFLAGS_fabs.o = -fno-builtin-fabs
CFLAGS_math.o = -fno-builtin-fabs
-
-ccflags-y = -w
diff --git a/arch/powerpc/math-emu/math_efp.c b/arch/powerpc/math-emu/math_efp.c
index aa3bb8da1cb9..f01e3475f689 100644
--- a/arch/powerpc/math-emu/math_efp.c
+++ b/arch/powerpc/math-emu/math_efp.c
@@ -219,6 +219,7 @@ int do_spe_mathemu(struct pt_regs *regs)
case AB:
case XCR:
FP_UNPACK_SP(SA, va.wp + 1);
+ fallthrough;
case XB:
FP_UNPACK_SP(SB, vb.wp + 1);
break;
@@ -227,8 +228,8 @@ int do_spe_mathemu(struct pt_regs *regs)
break;
}
- pr_debug("SA: %ld %08lx %ld (%ld)\n", SA_s, SA_f, SA_e, SA_c);
- pr_debug("SB: %ld %08lx %ld (%ld)\n", SB_s, SB_f, SB_e, SB_c);
+ pr_debug("SA: %d %08x %d (%d)\n", SA_s, SA_f, SA_e, SA_c);
+ pr_debug("SB: %d %08x %d (%d)\n", SB_s, SB_f, SB_e, SB_c);
switch (func) {
case EFSABS:
@@ -279,7 +280,7 @@ int do_spe_mathemu(struct pt_regs *regs)
} else {
SB_e += (func == EFSCTSF ? 31 : 32);
FP_TO_INT_ROUND_S(vc.wp[1], SB, 32,
- (func == EFSCTSF));
+ (func == EFSCTSF) ? 1 : 0);
}
goto update_regs;
@@ -288,7 +289,7 @@ int do_spe_mathemu(struct pt_regs *regs)
FP_CLEAR_EXCEPTIONS;
FP_UNPACK_DP(DB, vb.dp);
- pr_debug("DB: %ld %08lx %08lx %ld (%ld)\n",
+ pr_debug("DB: %d %08x %08x %d (%d)\n",
DB_s, DB_f1, DB_f0, DB_e, DB_c);
FP_CONV(S, D, 1, 2, SR, DB);
@@ -302,7 +303,7 @@ int do_spe_mathemu(struct pt_regs *regs)
FP_SET_EXCEPTION(FP_EX_INVALID);
} else {
FP_TO_INT_ROUND_S(vc.wp[1], SB, 32,
- ((func & 0x3) != 0));
+ ((func & 0x3) != 0) ? 1 : 0);
}
goto update_regs;
@@ -313,7 +314,7 @@ int do_spe_mathemu(struct pt_regs *regs)
FP_SET_EXCEPTION(FP_EX_INVALID);
} else {
FP_TO_INT_S(vc.wp[1], SB, 32,
- ((func & 0x3) != 0));
+ ((func & 0x3) != 0) ? 1 : 0);
}
goto update_regs;
@@ -323,7 +324,7 @@ int do_spe_mathemu(struct pt_regs *regs)
break;
pack_s:
- pr_debug("SR: %ld %08lx %ld (%ld)\n", SR_s, SR_f, SR_e, SR_c);
+ pr_debug("SR: %d %08x %d (%d)\n", SR_s, SR_f, SR_e, SR_c);
FP_PACK_SP(vc.wp + 1, SR);
goto update_regs;
@@ -347,6 +348,7 @@ int do_spe_mathemu(struct pt_regs *regs)
case AB:
case XCR:
FP_UNPACK_DP(DA, va.dp);
+ fallthrough;
case XB:
FP_UNPACK_DP(DB, vb.dp);
break;
@@ -355,9 +357,9 @@ int do_spe_mathemu(struct pt_regs *regs)
break;
}
- pr_debug("DA: %ld %08lx %08lx %ld (%ld)\n",
+ pr_debug("DA: %d %08x %08x %d (%d)\n",
DA_s, DA_f1, DA_f0, DA_e, DA_c);
- pr_debug("DB: %ld %08lx %08lx %ld (%ld)\n",
+ pr_debug("DB: %d %08x %08x %d (%d)\n",
DB_s, DB_f1, DB_f0, DB_e, DB_c);
switch (func) {
@@ -409,7 +411,7 @@ int do_spe_mathemu(struct pt_regs *regs)
} else {
DB_e += (func == EFDCTSF ? 31 : 32);
FP_TO_INT_ROUND_D(vc.wp[1], DB, 32,
- (func == EFDCTSF));
+ (func == EFDCTSF) ? 1 : 0);
}
goto update_regs;
@@ -418,7 +420,7 @@ int do_spe_mathemu(struct pt_regs *regs)
FP_CLEAR_EXCEPTIONS;
FP_UNPACK_SP(SB, vb.wp + 1);
- pr_debug("SB: %ld %08lx %ld (%ld)\n",
+ pr_debug("SB: %d %08x %d (%d)\n",
SB_s, SB_f, SB_e, SB_c);
FP_CONV(D, S, 2, 1, DR, SB);
@@ -432,7 +434,7 @@ int do_spe_mathemu(struct pt_regs *regs)
FP_SET_EXCEPTION(FP_EX_INVALID);
} else {
FP_TO_INT_D(vc.dp[0], DB, 64,
- ((func & 0x1) == 0));
+ ((func & 0x1) == 0) ? 1 : 0);
}
goto update_regs;
@@ -443,7 +445,7 @@ int do_spe_mathemu(struct pt_regs *regs)
FP_SET_EXCEPTION(FP_EX_INVALID);
} else {
FP_TO_INT_ROUND_D(vc.wp[1], DB, 32,
- ((func & 0x3) != 0));
+ ((func & 0x3) != 0) ? 1 : 0);
}
goto update_regs;
@@ -454,7 +456,7 @@ int do_spe_mathemu(struct pt_regs *regs)
FP_SET_EXCEPTION(FP_EX_INVALID);
} else {
FP_TO_INT_D(vc.wp[1], DB, 32,
- ((func & 0x3) != 0));
+ ((func & 0x3) != 0) ? 1 : 0);
}
goto update_regs;
@@ -464,7 +466,7 @@ int do_spe_mathemu(struct pt_regs *regs)
break;
pack_d:
- pr_debug("DR: %ld %08lx %08lx %ld (%ld)\n",
+ pr_debug("DR: %d %08x %08x %d (%d)\n",
DR_s, DR_f1, DR_f0, DR_e, DR_c);
FP_PACK_DP(vc.dp, DR);
@@ -493,6 +495,7 @@ int do_spe_mathemu(struct pt_regs *regs)
case XCR:
FP_UNPACK_SP(SA0, va.wp);
FP_UNPACK_SP(SA1, va.wp + 1);
+ fallthrough;
case XB:
FP_UNPACK_SP(SB0, vb.wp);
FP_UNPACK_SP(SB1, vb.wp + 1);
@@ -503,13 +506,13 @@ int do_spe_mathemu(struct pt_regs *regs)
break;
}
- pr_debug("SA0: %ld %08lx %ld (%ld)\n",
+ pr_debug("SA0: %d %08x %d (%d)\n",
SA0_s, SA0_f, SA0_e, SA0_c);
- pr_debug("SA1: %ld %08lx %ld (%ld)\n",
+ pr_debug("SA1: %d %08x %d (%d)\n",
SA1_s, SA1_f, SA1_e, SA1_c);
- pr_debug("SB0: %ld %08lx %ld (%ld)\n",
+ pr_debug("SB0: %d %08x %d (%d)\n",
SB0_s, SB0_f, SB0_e, SB0_c);
- pr_debug("SB1: %ld %08lx %ld (%ld)\n",
+ pr_debug("SB1: %d %08x %d (%d)\n",
SB1_s, SB1_f, SB1_e, SB1_c);
switch (func) {
@@ -568,7 +571,7 @@ int do_spe_mathemu(struct pt_regs *regs)
} else {
SB0_e += (func == EVFSCTSF ? 31 : 32);
FP_TO_INT_ROUND_S(vc.wp[0], SB0, 32,
- (func == EVFSCTSF));
+ (func == EVFSCTSF) ? 1 : 0);
}
if (SB1_c == FP_CLS_NAN) {
vc.wp[1] = 0;
@@ -576,7 +579,7 @@ int do_spe_mathemu(struct pt_regs *regs)
} else {
SB1_e += (func == EVFSCTSF ? 31 : 32);
FP_TO_INT_ROUND_S(vc.wp[1], SB1, 32,
- (func == EVFSCTSF));
+ (func == EVFSCTSF) ? 1 : 0);
}
goto update_regs;
@@ -587,14 +590,14 @@ int do_spe_mathemu(struct pt_regs *regs)
FP_SET_EXCEPTION(FP_EX_INVALID);
} else {
FP_TO_INT_ROUND_S(vc.wp[0], SB0, 32,
- ((func & 0x3) != 0));
+ ((func & 0x3) != 0) ? 1 : 0);
}
if (SB1_c == FP_CLS_NAN) {
vc.wp[1] = 0;
FP_SET_EXCEPTION(FP_EX_INVALID);
} else {
FP_TO_INT_ROUND_S(vc.wp[1], SB1, 32,
- ((func & 0x3) != 0));
+ ((func & 0x3) != 0) ? 1 : 0);
}
goto update_regs;
@@ -605,14 +608,14 @@ int do_spe_mathemu(struct pt_regs *regs)
FP_SET_EXCEPTION(FP_EX_INVALID);
} else {
FP_TO_INT_S(vc.wp[0], SB0, 32,
- ((func & 0x3) != 0));
+ ((func & 0x3) != 0) ? 1 : 0);
}
if (SB1_c == FP_CLS_NAN) {
vc.wp[1] = 0;
FP_SET_EXCEPTION(FP_EX_INVALID);
} else {
FP_TO_INT_S(vc.wp[1], SB1, 32,
- ((func & 0x3) != 0));
+ ((func & 0x3) != 0) ? 1 : 0);
}
goto update_regs;
@@ -622,9 +625,9 @@ int do_spe_mathemu(struct pt_regs *regs)
break;
pack_vs:
- pr_debug("SR0: %ld %08lx %ld (%ld)\n",
+ pr_debug("SR0: %d %08x %d (%d)\n",
SR0_s, SR0_f, SR0_e, SR0_c);
- pr_debug("SR1: %ld %08lx %ld (%ld)\n",
+ pr_debug("SR1: %d %08x %d (%d)\n",
SR1_s, SR1_f, SR1_e, SR1_c);
FP_PACK_SP(vc.wp, SR0);
--
2.37.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
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