diff mbox series

USB: storage: isd200: remove redundant assignment to variable sendToTransport

Message ID 20190809173314.4623-1-colin.king@canonical.com (mailing list archive)
State Mainlined
Commit b98052e9b5c4878f0e13b11cd5b7a04242c2d848
Headers show
Series USB: storage: isd200: remove redundant assignment to variable sendToTransport | expand

Commit Message

Colin King Aug. 9, 2019, 5:33 p.m. UTC
From: Colin Ian King <colin.king@canonical.com>

The variable sendToTransport is being initialized with a value that is
never read and is being re-assigned a little later on. The assignment
is redundant and hence can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 drivers/usb/storage/isd200.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Alan Stern Aug. 9, 2019, 7:29 p.m. UTC | #1
On Fri, 9 Aug 2019, Colin King wrote:

> From: Colin Ian King <colin.king@canonical.com>
> 
> The variable sendToTransport is being initialized with a value that is
> never read and is being re-assigned a little later on. The assignment
> is redundant and hence can be removed.
> 
> Addresses-Coverity: ("Unused value")

Of what use is that tag to general kernel developers?

> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
>  drivers/usb/storage/isd200.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/usb/storage/isd200.c b/drivers/usb/storage/isd200.c
> index 2b474d60b4db..28e1128d53a4 100644
> --- a/drivers/usb/storage/isd200.c
> +++ b/drivers/usb/storage/isd200.c
> @@ -1511,7 +1511,7 @@ static int isd200_Initialization(struct us_data *us)
>  
>  static void isd200_ata_command(struct scsi_cmnd *srb, struct us_data *us)
>  {
> -	int sendToTransport = 1, orig_bufflen;
> +	int sendToTransport, orig_bufflen;
>  	union ata_cdb ataCdb;
>  
>  	/* Make sure driver was initialized */

Otherwise:

Acked-by: Alan Stern <stern@rowland.harvard.edu>

Alan Stern
Colin King Aug. 9, 2019, 7:32 p.m. UTC | #2
On 09/08/2019 20:29, Alan Stern wrote:
> On Fri, 9 Aug 2019, Colin King wrote:
> 
>> From: Colin Ian King <colin.king@canonical.com>
>>
>> The variable sendToTransport is being initialized with a value that is
>> never read and is being re-assigned a little later on. The assignment
>> is redundant and hence can be removed.
>>
>> Addresses-Coverity: ("Unused value")
> 
> Of what use is that tag to general kernel developers?

This is being informally used so that we can track which bugs are
getting found with specific static analysis tools.  The public coverity
bug reports also have a CID# number.  I'm working on range of coverity
builds (different build configs) that are not public because I can crank
multiple builds per day to find issues.

Colin

> 
>> Signed-off-by: Colin Ian King <colin.king@canonical.com>
>> ---
>>  drivers/usb/storage/isd200.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/usb/storage/isd200.c b/drivers/usb/storage/isd200.c
>> index 2b474d60b4db..28e1128d53a4 100644
>> --- a/drivers/usb/storage/isd200.c
>> +++ b/drivers/usb/storage/isd200.c
>> @@ -1511,7 +1511,7 @@ static int isd200_Initialization(struct us_data *us)
>>  
>>  static void isd200_ata_command(struct scsi_cmnd *srb, struct us_data *us)
>>  {
>> -	int sendToTransport = 1, orig_bufflen;
>> +	int sendToTransport, orig_bufflen;
>>  	union ata_cdb ataCdb;
>>  
>>  	/* Make sure driver was initialized */
> 
> Otherwise:
> 
> Acked-by: Alan Stern <stern@rowland.harvard.edu>
> 
> Alan Stern
>
diff mbox series

Patch

diff --git a/drivers/usb/storage/isd200.c b/drivers/usb/storage/isd200.c
index 2b474d60b4db..28e1128d53a4 100644
--- a/drivers/usb/storage/isd200.c
+++ b/drivers/usb/storage/isd200.c
@@ -1511,7 +1511,7 @@  static int isd200_Initialization(struct us_data *us)
 
 static void isd200_ata_command(struct scsi_cmnd *srb, struct us_data *us)
 {
-	int sendToTransport = 1, orig_bufflen;
+	int sendToTransport, orig_bufflen;
 	union ata_cdb ataCdb;
 
 	/* Make sure driver was initialized */