diff mbox

tpm_tis_core: Use common error handling code in tpm_tis_send_data()

Message ID fb0a6fbb-db2f-ce3f-f1c2-02f934accc4e@users.sourceforge.net (mailing list archive)
State New, archived
Headers show

Commit Message

SF Markus Elfring Oct. 22, 2017, 10:16 a.m. UTC
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sun, 22 Oct 2017 11:41:09 +0200

Add a jump target so that a specific error code assignment for timeout
conditions will be in the implementation only at the end of this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 drivers/char/tpm/tpm_tis_core.c | 26 ++++++++++++--------------
 1 file changed, 12 insertions(+), 14 deletions(-)

Comments

Dan Carpenter Oct. 23, 2017, 7:34 a.m. UTC | #1
Markus, you should focus on fixing bugs.  The original code is fine.
These patches are a waste of reviewer time.

regards,
dan carpenter
Jarkko Sakkinen Oct. 23, 2017, 1:42 p.m. UTC | #2
On Sun, Oct 22, 2017 at 12:16:19PM +0200, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Sun, 22 Oct 2017 11:41:09 +0200
> 
> Add a jump target so that a specific error code assignment for timeout
> conditions will be in the implementation only at the end of this function.
> 
> This issue was detected by using the Coccinelle software.
> 
> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
> ---
>  drivers/char/tpm/tpm_tis_core.c | 26 ++++++++++++--------------
>  1 file changed, 12 insertions(+), 14 deletions(-)
> 
> diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c
> index fdde971bc810..3681f7a74d1b 100644
> --- a/drivers/char/tpm/tpm_tis_core.c
> +++ b/drivers/char/tpm/tpm_tis_core.c
> @@ -262,12 +262,10 @@ static int tpm_tis_send_data(struct tpm_chip *chip, const u8 *buf, size_t len)
>  	status = tpm_tis_status(chip);
>  	if ((status & TPM_STS_COMMAND_READY) == 0) {
>  		tpm_tis_ready(chip);
> -		if (wait_for_tpm_stat
> -		    (chip, TPM_STS_COMMAND_READY, chip->timeout_b,
> -		     &priv->int_queue, false) < 0) {
> -			rc = -ETIME;
> -			goto out_err;
> -		}
> +		if (wait_for_tpm_stat(chip, TPM_STS_COMMAND_READY,
> +				      chip->timeout_b, &priv->int_queue, false)
> +		    < 0)
> +			goto report_timeout;
>  	}
>  
>  	while (count < len - 1) {
> @@ -286,10 +284,9 @@ static int tpm_tis_send_data(struct tpm_chip *chip, const u8 *buf, size_t len)
>  		count += burstcnt;
>  
>  		if (wait_for_tpm_stat(chip, TPM_STS_VALID, chip->timeout_c,
> -					&priv->int_queue, false) < 0) {
> -			rc = -ETIME;
> -			goto out_err;
> -		}
> +				      &priv->int_queue, false) < 0)
> +			goto report_timeout;
> +
>  		status = tpm_tis_status(chip);
>  		if (!itpm && (status & TPM_STS_DATA_EXPECT) == 0) {
>  			rc = -EIO;
> @@ -303,10 +300,9 @@ static int tpm_tis_send_data(struct tpm_chip *chip, const u8 *buf, size_t len)
>  		goto out_err;
>  
>  	if (wait_for_tpm_stat(chip, TPM_STS_VALID, chip->timeout_c,
> -				&priv->int_queue, false) < 0) {
> -		rc = -ETIME;
> -		goto out_err;
> -	}
> +			      &priv->int_queue, false) < 0)
> +		goto report_timeout;
> +
>  	status = tpm_tis_status(chip);
>  	if (!itpm && (status & TPM_STS_DATA_EXPECT) != 0) {
>  		rc = -EIO;
> @@ -315,6 +311,8 @@ static int tpm_tis_send_data(struct tpm_chip *chip, const u8 *buf, size_t len)
>  
>  	return 0;
>  
> +report_timeout:
> +	rc = -ETIME;
>  out_err:
>  	tpm_tis_ready(chip);
>  	return rc;
> -- 
> 2.14.2
> 

NAK. wait_for_tpm_stat() should give that error code.

/Jarkko
SF Markus Elfring Oct. 23, 2017, 1:51 p.m. UTC | #3
>> @@ -315,6 +311,8 @@ static int tpm_tis_send_data(struct tpm_chip *chip, const u8 *buf, size_t len)
>>  
>>  	return 0;
>>  
>> +report_timeout:
>> +	rc = -ETIME;
>>  out_err:
>>  	tpm_tis_ready(chip);
>>  	return rc;
>> -- 
>> 2.14.2
>>
> 
> NAK. wait_for_tpm_stat() should give that error code.

This is a pity that you reject another bit of code reduction.

Regards,
Markus
Jarkko Sakkinen Oct. 24, 2017, 1:55 p.m. UTC | #4
On Mon, Oct 23, 2017 at 03:51:09PM +0200, SF Markus Elfring wrote:
> >> @@ -315,6 +311,8 @@ static int tpm_tis_send_data(struct tpm_chip *chip, const u8 *buf, size_t len)
> >>  
> >>  	return 0;
> >>  
> >> +report_timeout:
> >> +	rc = -ETIME;
> >>  out_err:
> >>  	tpm_tis_ready(chip);
> >>  	return rc;
> >> -- 
> >> 2.14.2
> >>
> > 
> > NAK. wait_for_tpm_stat() should give that error code.
> 
> This is a pity that you reject another bit of code reduction.
> 
> Regards,
> Markus

It is a pity that you continue doing this constant patch trolling.
That is what it is.

/Jarkko.
diff mbox

Patch

diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c
index fdde971bc810..3681f7a74d1b 100644
--- a/drivers/char/tpm/tpm_tis_core.c
+++ b/drivers/char/tpm/tpm_tis_core.c
@@ -262,12 +262,10 @@  static int tpm_tis_send_data(struct tpm_chip *chip, const u8 *buf, size_t len)
 	status = tpm_tis_status(chip);
 	if ((status & TPM_STS_COMMAND_READY) == 0) {
 		tpm_tis_ready(chip);
-		if (wait_for_tpm_stat
-		    (chip, TPM_STS_COMMAND_READY, chip->timeout_b,
-		     &priv->int_queue, false) < 0) {
-			rc = -ETIME;
-			goto out_err;
-		}
+		if (wait_for_tpm_stat(chip, TPM_STS_COMMAND_READY,
+				      chip->timeout_b, &priv->int_queue, false)
+		    < 0)
+			goto report_timeout;
 	}
 
 	while (count < len - 1) {
@@ -286,10 +284,9 @@  static int tpm_tis_send_data(struct tpm_chip *chip, const u8 *buf, size_t len)
 		count += burstcnt;
 
 		if (wait_for_tpm_stat(chip, TPM_STS_VALID, chip->timeout_c,
-					&priv->int_queue, false) < 0) {
-			rc = -ETIME;
-			goto out_err;
-		}
+				      &priv->int_queue, false) < 0)
+			goto report_timeout;
+
 		status = tpm_tis_status(chip);
 		if (!itpm && (status & TPM_STS_DATA_EXPECT) == 0) {
 			rc = -EIO;
@@ -303,10 +300,9 @@  static int tpm_tis_send_data(struct tpm_chip *chip, const u8 *buf, size_t len)
 		goto out_err;
 
 	if (wait_for_tpm_stat(chip, TPM_STS_VALID, chip->timeout_c,
-				&priv->int_queue, false) < 0) {
-		rc = -ETIME;
-		goto out_err;
-	}
+			      &priv->int_queue, false) < 0)
+		goto report_timeout;
+
 	status = tpm_tis_status(chip);
 	if (!itpm && (status & TPM_STS_DATA_EXPECT) != 0) {
 		rc = -EIO;
@@ -315,6 +311,8 @@  static int tpm_tis_send_data(struct tpm_chip *chip, const u8 *buf, size_t len)
 
 	return 0;
 
+report_timeout:
+	rc = -ETIME;
 out_err:
 	tpm_tis_ready(chip);
 	return rc;