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* [PATCH v3] tpm: Fix some name collisions with drivers/char/tpm.h
@ 2019-02-05  9:14 Jarkko Sakkinen
       [not found] ` <20190207163159.A30D12190A@mail.kernel.org>
  0 siblings, 1 reply; 2+ messages in thread
From: Jarkko Sakkinen @ 2019-02-05  9:14 UTC (permalink / raw)
  To: linux-integrity
  Cc: linux-kernel, linux-security-module, roberto.sassu, zohar, jgg,
	Jarkko Sakkinen, stable

* Rename TPM_BUFSIZE defined in drivers/char/tpm/st33zp24/st33zp24.h to
  ST33ZP24_BUFSIZE.
* Rename TPM_BUFSIZE defined in drivers/char/tpm/tpm_i2c_infineon.c to
  TPM_I2C_INFINEON_BUFSIZE.
* Rename TPM_RETRY in tpm_i2c_nuvoton to TPM_I2C_RETRIES.
* Remove TPM_HEADER_SIZE from tpm_i2c_nuvoton.

Cc: stable@vger.kernel.org
Fixes: bf38b8710892 ("tpm/tpm_i2c_stm_st33: Split tpm_i2c_tpm_st33 in 2 layers (core + phy)")
Fixes: aad628c1d91a ("char/tpm: Add new driver for Infineon I2C TIS TPM")
Fixes: 32d33b29ba07 ("TPM: Retry SaveState command in suspend path")
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
---
v3:
* Fix two name collisions in tpm_i2c_nuvoton.
* Fix short summary.
* Fix compilation error in tpm_i2c_infineon (forgot to stage one diff
  to v2).
v2:
* Fix also the name collision in tpm_ic2_infineon.
 drivers/char/tpm/st33zp24/i2c.c      |  2 +-
 drivers/char/tpm/st33zp24/spi.c      |  2 +-
 drivers/char/tpm/st33zp24/st33zp24.h |  4 ++--
 drivers/char/tpm/tpm_i2c_infineon.c  | 15 ++++++++-------
 drivers/char/tpm/tpm_i2c_nuvoton.c   | 16 +++++++---------
 5 files changed, 19 insertions(+), 20 deletions(-)

diff --git a/drivers/char/tpm/st33zp24/i2c.c b/drivers/char/tpm/st33zp24/i2c.c
index be5d1abd3e8e..8390c5b54c3b 100644
--- a/drivers/char/tpm/st33zp24/i2c.c
+++ b/drivers/char/tpm/st33zp24/i2c.c
@@ -33,7 +33,7 @@
 
 struct st33zp24_i2c_phy {
 	struct i2c_client *client;
-	u8 buf[TPM_BUFSIZE + 1];
+	u8 buf[ST33ZP24_BUFSIZE + 1];
 	int io_lpcpd;
 };
 
diff --git a/drivers/char/tpm/st33zp24/spi.c b/drivers/char/tpm/st33zp24/spi.c
index d7909ab287a8..ff019a1e3c68 100644
--- a/drivers/char/tpm/st33zp24/spi.c
+++ b/drivers/char/tpm/st33zp24/spi.c
@@ -63,7 +63,7 @@
  * some latency byte before the answer is available (max 15).
  * We have 2048 + 1024 + 15.
  */
-#define ST33ZP24_SPI_BUFFER_SIZE (TPM_BUFSIZE + (TPM_BUFSIZE / 2) +\
+#define ST33ZP24_SPI_BUFFER_SIZE (ST33ZP24_BUFSIZE + (ST33ZP24_BUFSIZE / 2) +\
 				  MAX_SPI_LATENCY)
 
 
diff --git a/drivers/char/tpm/st33zp24/st33zp24.h b/drivers/char/tpm/st33zp24/st33zp24.h
index 6f4a4198af6a..20da0a84988d 100644
--- a/drivers/char/tpm/st33zp24/st33zp24.h
+++ b/drivers/char/tpm/st33zp24/st33zp24.h
@@ -18,8 +18,8 @@
 #ifndef __LOCAL_ST33ZP24_H__
 #define __LOCAL_ST33ZP24_H__
 
-#define TPM_WRITE_DIRECTION             0x80
-#define TPM_BUFSIZE                     2048
+#define TPM_WRITE_DIRECTION	0x80
+#define ST33ZP24_BUFSIZE	2048
 
 struct st33zp24_dev {
 	struct tpm_chip *chip;
diff --git a/drivers/char/tpm/tpm_i2c_infineon.c b/drivers/char/tpm/tpm_i2c_infineon.c
index 9086edc9066b..3b490d9d90e7 100644
--- a/drivers/char/tpm/tpm_i2c_infineon.c
+++ b/drivers/char/tpm/tpm_i2c_infineon.c
@@ -26,8 +26,7 @@
 #include <linux/wait.h>
 #include "tpm.h"
 
-/* max. buffer size supported by our TPM */
-#define TPM_BUFSIZE 1260
+#define TPM_I2C_INFINEON_BUFSIZE 1260
 
 /* max. number of iterations after I2C NAK */
 #define MAX_COUNT 3
@@ -63,11 +62,13 @@ enum i2c_chip_type {
 	UNKNOWN,
 };
 
-/* Structure to store I2C TPM specific stuff */
 struct tpm_inf_dev {
 	struct i2c_client *client;
 	int locality;
-	u8 buf[TPM_BUFSIZE + sizeof(u8)]; /* max. buffer size + addr */
+	/* In addition to the data itself, the buffer must fit the 7-bit I2C
+	 * address and the direction bit.
+	 */
+	u8 buf[TPM_I2C_INFINEON_BUFSIZE + 1];
 	struct tpm_chip *chip;
 	enum i2c_chip_type chip_type;
 	unsigned int adapterlimit;
@@ -219,7 +220,7 @@ static int iic_tpm_write_generic(u8 addr, u8 *buffer, size_t len,
 		.buf = tpm_dev.buf
 	};
 
-	if (len > TPM_BUFSIZE)
+	if (len > TPM_I2C_INFINEON_BUFSIZE)
 		return -EINVAL;
 
 	if (!tpm_dev.client->adapter->algo->master_xfer)
@@ -527,8 +528,8 @@ static int tpm_tis_i2c_send(struct tpm_chip *chip, u8 *buf, size_t len)
 	u8 retries = 0;
 	u8 sts = TPM_STS_GO;
 
-	if (len > TPM_BUFSIZE)
-		return -E2BIG;	/* command is too long for our tpm, sorry */
+	if (len > TPM_I2C_INFINEON_BUFSIZE)
+		return -E2BIG;
 
 	if (request_locality(chip, 0) < 0)
 		return -EBUSY;
diff --git a/drivers/char/tpm/tpm_i2c_nuvoton.c b/drivers/char/tpm/tpm_i2c_nuvoton.c
index 217f7f1cbde8..5700cc2ddee1 100644
--- a/drivers/char/tpm/tpm_i2c_nuvoton.c
+++ b/drivers/char/tpm/tpm_i2c_nuvoton.c
@@ -35,14 +35,12 @@
 #include "tpm.h"
 
 /* I2C interface offsets */
-#define TPM_STS                0x00
-#define TPM_BURST_COUNT        0x01
-#define TPM_DATA_FIFO_W        0x20
-#define TPM_DATA_FIFO_R        0x40
-#define TPM_VID_DID_RID        0x60
-/* TPM command header size */
-#define TPM_HEADER_SIZE        10
-#define TPM_RETRY      5
+#define TPM_STS			0x00
+#define TPM_BURST_COUNT		0x01
+#define TPM_DATA_FIFO_W		0x20
+#define TPM_DATA_FIFO_R		0x40
+#define TPM_VID_DID_RID		0x60
+#define TPM_I2C_RETRIES		5
 /*
  * I2C bus device maximum buffer size w/o counting I2C address or command
  * i.e. max size required for I2C write is 34 = addr, command, 32 bytes data
@@ -292,7 +290,7 @@ static int i2c_nuvoton_recv(struct tpm_chip *chip, u8 *buf, size_t count)
 		dev_err(dev, "%s() count < header size\n", __func__);
 		return -EIO;
 	}
-	for (retries = 0; retries < TPM_RETRY; retries++) {
+	for (retries = 0; retries < TPM_I2C_RETRIES; retries++) {
 		if (retries > 0) {
 			/* if this is not the first trial, set responseRetry */
 			i2c_nuvoton_write_status(client,
-- 
2.19.1


^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: [PATCH v3] tpm: Fix some name collisions with drivers/char/tpm.h
       [not found] ` <20190207163159.A30D12190A@mail.kernel.org>
@ 2019-02-07 21:19   ` Jarkko Sakkinen
  0 siblings, 0 replies; 2+ messages in thread
From: Jarkko Sakkinen @ 2019-02-07 21:19 UTC (permalink / raw)
  To: Sasha Levin; +Cc: linux-integrity, linux-kernel, stable

On Thu, Feb 07, 2019 at 04:31:58PM +0000, Sasha Levin wrote:
> Hi,
> 
> [This is an automated email]
> 
> This commit has been processed because it contains a "Fixes:" tag,
> fixing commit: bf38b8710892 tpm/tpm_i2c_stm_st33: Split tpm_i2c_tpm_st33 in 2 layers (core + phy).
> 
> The bot has tested the following trees: v4.20.6, v4.19.19, v4.14.97, v4.9.154, v4.4.172.
> 
> v4.20.6: Build OK!
> v4.19.19: Build OK!
> v4.14.97: Build OK!
> v4.9.154: Build OK!
> v4.4.172: Failed to apply! Possible dependencies:
>     036bb38ffb3e ("tpm_tis: Ensure interrupts are disabled when the driver starts")
>     23d06ff700f5 ("tpm: drop tpm_atmel specific fields from tpm_vendor_specific")
>     25112048cd59 ("tpm: rework tpm_get_timeouts()")
>     4d627e672bd0 ("tpm_tis: Do not fall back to a hardcoded address for TPM2")
>     4eea703caaac ("tpm: drop 'iobase' from struct tpm_vendor_specific")
>     51dd43dff74b ("tpm_tis: Use devm_ioremap_resource")
>     55a889c2cb13 ("tpm_crb: Use the common ACPI definition of struct acpi_tpm2")
>     56671c893e0e ("tpm: drop 'locality' from struct tpm_vendor_specific")
>     570a36097f30 ("tpm: drop 'irq' from struct tpm_vendor_specific")
>     7ab4032fa579 ("tpm_tis: Get rid of the duplicate IRQ probing code")
>     d30b8e4f68ef ("tpm: cleanup tpm_tis_remove()")
>     d4956524f1b0 ("tpm: drop manufacturer_id from struct tpm_vendor_specific")
>     e3837e74a06d ("tpm_tis: Refactor the interrupt setup")
>     ee1779840d09 ("tpm: drop 'base' from struct tpm_vendor_specific")
>     ef7b81dc7864 ("tpm_tis: Disable interrupt auto probing on a per-device basis")
> 
> 
> How should we proceed with this patch?

I'll look into this next week.

/Jarkko

^ permalink raw reply	[flat|nested] 2+ messages in thread

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2019-02-05  9:14 [PATCH v3] tpm: Fix some name collisions with drivers/char/tpm.h Jarkko Sakkinen
     [not found] ` <20190207163159.A30D12190A@mail.kernel.org>
2019-02-07 21:19   ` Jarkko Sakkinen

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