Re: [PATCH] staging: gpib: Remove unused value

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On 10/15/24 15:02, Everest K.C. wrote:
The variable `complement_count` is assigned a value which is again
overwritten in the next statement.
Fix this by removing the first value assigning statement

This issue was reported by Coverity Scan.
Report:
CID 1600790: (#1 of 1): Unused value (UNUSED_VALUE)
assigned_value: Assigning value from length to complement_count here,
but that stored value is overwritten before it can be used.

Fixes: 4e127de14fa7 ("staging: gpib: Add National Instruments USB GPIB driver")
Signed-off-by: Everest K.C. <everestkc@xxxxxxxxxxxxxxxx>
---
  drivers/staging/gpib/ni_usb/ni_usb_gpib.c | 1 -
  1 file changed, 1 deletion(-)

diff --git a/drivers/staging/gpib/ni_usb/ni_usb_gpib.c b/drivers/staging/gpib/ni_usb/ni_usb_gpib.c
index 1da263676f2a..e19e18892468 100644
--- a/drivers/staging/gpib/ni_usb/ni_usb_gpib.c
+++ b/drivers/staging/gpib/ni_usb/ni_usb_gpib.c
@@ -759,7 +759,6 @@ static int ni_usb_write(gpib_board_t *board, uint8_t *buffer, size_t length,
  	if (!out_data)
  		return -ENOMEM;
  	out_data[i++] = 0x0d;
-	complement_count = length;
  	complement_count = length - 1;
  	complement_count = ~complement_count;
  	out_data[i++] = complement_count & 0xff;

Looks good to me.

Reviewed-by: Shuah Khan <skhan@xxxxxxxxxxxxxxxxxxx>

thanks,
-- Shuah




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