diff mbox series

[RESEND,v2,4/6] nfc: llcp: use test_bit()

Message ID 20220302192523.57444-5-krzysztof.kozlowski@canonical.com (mailing list archive)
State Accepted
Commit a736491239f4b434fc76a2ba0c1bdb8eaf9eb792
Delegated to: Netdev Maintainers
Headers show
Series nfc: llcp: few cleanups/improvements | expand

Checks

Context Check Description
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix warning Target tree name not specified in the subject
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers success CCed 4 of 4 maintainers
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 8 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/tree_selection success Guessing tree name failed - patch did not apply

Commit Message

Krzysztof Kozlowski March 2, 2022, 7:25 p.m. UTC 
Use test_bit() instead of open-coding it, just like in other places
touching the bitmap.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
---
 net/nfc/llcp_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

David Laight March 3, 2022, 12:10 a.m. UTC | #1 
From: Krzysztof Kozlowski
> Sent: 02 March 2022 19:25
> 
> Use test_bit() instead of open-coding it, just like in other places
> touching the bitmap.

Except it isn't a bitmap, it is just a structure member that contains bits.
So all the other places should be changes to use C shifts and masks (etc).

	David

> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
> ---
>  net/nfc/llcp_core.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/net/nfc/llcp_core.c b/net/nfc/llcp_core.c
> index 5ad5157aa9c5..b70d5042bf74 100644
> --- a/net/nfc/llcp_core.c
> +++ b/net/nfc/llcp_core.c
> @@ -383,7 +383,7 @@ u8 nfc_llcp_get_sdp_ssap(struct nfc_llcp_local *local,
>  			pr_debug("WKS %d\n", ssap);
> 
>  			/* This is a WKS, let's check if it's free */
> -			if (local->local_wks & BIT(ssap)) {
> +			if (test_bit(ssap, &local->local_wks)) {
>  				mutex_unlock(&local->sdp_lock);
> 
>  				return LLCP_SAP_MAX;
> --
> 2.32.0

-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)
Krzysztof Kozlowski March 3, 2022, 1:13 p.m. UTC | #2 
On 03/03/2022 01:10, David Laight wrote:
> From: Krzysztof Kozlowski
>> Sent: 02 March 2022 19:25
>>
>> Use test_bit() instead of open-coding it, just like in other places
>> touching the bitmap.
> 
> Except it isn't a bitmap, it is just a structure member that contains bits.
> So all the other places should be changes to use C shifts and masks (etc).
> 

It's not declared as bitmap but it is unsigned long, so an appropriate
type (and same type) for test_bit.


Best regards,
Krzysztof
diff mbox series

Patch

diff --git a/net/nfc/llcp_core.c b/net/nfc/llcp_core.c
index 5ad5157aa9c5..b70d5042bf74 100644
--- a/net/nfc/llcp_core.c
+++ b/net/nfc/llcp_core.c
@@ -383,7 +383,7 @@  u8 nfc_llcp_get_sdp_ssap(struct nfc_llcp_local *local,
 			pr_debug("WKS %d\n", ssap);
 
 			/* This is a WKS, let's check if it's free */
-			if (local->local_wks & BIT(ssap)) {
+			if (test_bit(ssap, &local->local_wks)) {
 				mutex_unlock(&local->sdp_lock);
 
 				return LLCP_SAP_MAX;