* [PATCH] NFC: microread: Pass err variable to async_cb()
@ 2021-06-01 13:00 Nigel Christian
2021-06-01 13:07 ` Krzysztof Kozlowski
2021-06-01 13:37 ` Dan Carpenter
0 siblings, 2 replies; 3+ messages in thread
From: Nigel Christian @ 2021-06-01 13:00 UTC (permalink / raw)
To: Krzysztof Kozlowski; +Cc: linux-nfc, netdev, kernel-janitors
In the case MICROREAD_CB_TYPE_READER_ALL clang reports a dead
code warning. The error code is being directly passed to
async_cb(). Fix this by passing the err variable, which is also
done in another path.
Addresses-Coverity: ("Unused value")
Signed-off-by: Nigel Christian <nigel.l.christian@gmail.com>
---
drivers/nfc/microread/microread.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/nfc/microread/microread.c b/drivers/nfc/microread/microread.c
index 8d3988457c58..130b0f554016 100644
--- a/drivers/nfc/microread/microread.c
+++ b/drivers/nfc/microread/microread.c
@@ -367,7 +367,7 @@ static void microread_im_transceive_cb(void *context, struct sk_buff *skb,
err = -EPROTO;
kfree_skb(skb);
info->async_cb(info->async_cb_context, NULL,
- -EPROTO);
+ err);
return;
}
--
2.31.1
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH] NFC: microread: Pass err variable to async_cb()
2021-06-01 13:00 [PATCH] NFC: microread: Pass err variable to async_cb() Nigel Christian
@ 2021-06-01 13:07 ` Krzysztof Kozlowski
2021-06-01 13:37 ` Dan Carpenter
1 sibling, 0 replies; 3+ messages in thread
From: Krzysztof Kozlowski @ 2021-06-01 13:07 UTC (permalink / raw)
To: Nigel Christian; +Cc: linux-nfc, netdev, kernel-janitors
On 01/06/2021 15:00, Nigel Christian wrote:
> In the case MICROREAD_CB_TYPE_READER_ALL clang reports a dead
> code warning. The error code is being directly passed to
> async_cb(). Fix this by passing the err variable, which is also
> done in another path.
>
> Addresses-Coverity: ("Unused value")
> Signed-off-by: Nigel Christian <nigel.l.christian@gmail.com>
> ---
> drivers/nfc/microread/microread.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/nfc/microread/microread.c b/drivers/nfc/microread/microread.c
> index 8d3988457c58..130b0f554016 100644
> --- a/drivers/nfc/microread/microread.c
> +++ b/drivers/nfc/microread/microread.c
> @@ -367,7 +367,7 @@ static void microread_im_transceive_cb(void *context, struct sk_buff *skb,
> err = -EPROTO;
Remove this line instead, please. The err is argument passed by value so
assigning it within a function is ugly.
> kfree_skb(skb);
> info->async_cb(info->async_cb_context, NULL,
> - -EPROTO);
> + err);
> return;
> }
>
>
Best regards,
Krzysztof
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] NFC: microread: Pass err variable to async_cb()
2021-06-01 13:00 [PATCH] NFC: microread: Pass err variable to async_cb() Nigel Christian
2021-06-01 13:07 ` Krzysztof Kozlowski
@ 2021-06-01 13:37 ` Dan Carpenter
1 sibling, 0 replies; 3+ messages in thread
From: Dan Carpenter @ 2021-06-01 13:37 UTC (permalink / raw)
To: Nigel Christian; +Cc: Krzysztof Kozlowski, linux-nfc, netdev, kernel-janitors
On Tue, Jun 01, 2021 at 09:00:33AM -0400, Nigel Christian wrote:
> In the case MICROREAD_CB_TYPE_READER_ALL clang reports a dead
> code warning. The error code is being directly passed to
> async_cb(). Fix this by passing the err variable, which is also
> done in another path.
>
> Addresses-Coverity: ("Unused value")
> Signed-off-by: Nigel Christian <nigel.l.christian@gmail.com>
> ---
> drivers/nfc/microread/microread.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/nfc/microread/microread.c b/drivers/nfc/microread/microread.c
> index 8d3988457c58..130b0f554016 100644
> --- a/drivers/nfc/microread/microread.c
> +++ b/drivers/nfc/microread/microread.c
> @@ -367,7 +367,7 @@ static void microread_im_transceive_cb(void *context, struct sk_buff *skb,
> err = -EPROTO;
> kfree_skb(skb);
> info->async_cb(info->async_cb_context, NULL,
> - -EPROTO);
> + err);
It would be better to just delete the "err = -EPROTO;" assignment.
Literals are more readable. Avoid pointless indirection.
regards,
dan carpenter
^ permalink raw reply [flat|nested] 3+ messages in thread
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2021-06-01 13:00 [PATCH] NFC: microread: Pass err variable to async_cb() Nigel Christian
2021-06-01 13:07 ` Krzysztof Kozlowski
2021-06-01 13:37 ` Dan Carpenter
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