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[4/5] net: renesas: rswitch: do not deinit disabled ports

Message ID 20241202134904.3882317-5-nikita.yoush@cogentembedded.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series net: renesas: rswitch: several fixes | expand

Checks

Context Check Description
netdev/series_format warning Target tree name not specified in the subject
netdev/tree_selection success Guessed tree name to be net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 3 this patch: 3
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers fail 1 blamed authors not CCed: andrew+netdev@lunn.ch; 1 maintainers not CCed: andrew+netdev@lunn.ch
netdev/build_clang success Errors and warnings before: 3 this patch: 3
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success Fixes tag looks correct
netdev/build_allmodconfig_warn success Errors and warnings before: 304 this patch: 304
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 8 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-12-02--15-00 (tests: 760)

Commit Message

Nikita Yushchenko Dec. 2, 2024, 1:49 p.m. UTC
In rswitch_ether_port_init_all(), only enabled ports are initialized.
Then, rswitch_ether_port_deinit_all() shall also only deinitialize
enabled ports.

Fixes: 3590918b5d07 ("net: ethernet: renesas: Add support for "Ethernet Switch"")
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
---
 drivers/net/ethernet/renesas/rswitch.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Jacob Keller Dec. 4, 2024, 12:27 a.m. UTC | #1
On 12/2/2024 5:49 AM, Nikita Yushchenko wrote:
> In rswitch_ether_port_init_all(), only enabled ports are initialized.
> Then, rswitch_ether_port_deinit_all() shall also only deinitialize
> enabled ports.
> 
> Fixes: 3590918b5d07 ("net: ethernet: renesas: Add support for "Ethernet Switch"")
> Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
> ---

Do you happen to have any data on whether this causes any visible issues?

At a glance of the code, rswitch_ether_port_deinit_one appears to check
various pointers before doing anything and skips any real work if those
pointers aren't initialized.

Either way, this seems like a good cleanup, though it might not warrant
a fixes or net target if there is no user visible bug associated with it.

Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>

>  drivers/net/ethernet/renesas/rswitch.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/renesas/rswitch.c b/drivers/net/ethernet/renesas/rswitch.c
> index 779c05b8e05f..5980084d9211 100644
> --- a/drivers/net/ethernet/renesas/rswitch.c
> +++ b/drivers/net/ethernet/renesas/rswitch.c
> @@ -1527,7 +1527,7 @@ static void rswitch_ether_port_deinit_all(struct rswitch_private *priv)
>  {
>  	unsigned int i;
>  
> -	for (i = 0; i < RSWITCH_NUM_PORTS; i++) {
> +	rswitch_for_each_enabled_port(priv, i) {
>  		phy_exit(priv->rdev[i]->serdes);
>  		rswitch_ether_port_deinit_one(priv->rdev[i]);
>  	}
diff mbox series

Patch

diff --git a/drivers/net/ethernet/renesas/rswitch.c b/drivers/net/ethernet/renesas/rswitch.c
index 779c05b8e05f..5980084d9211 100644
--- a/drivers/net/ethernet/renesas/rswitch.c
+++ b/drivers/net/ethernet/renesas/rswitch.c
@@ -1527,7 +1527,7 @@  static void rswitch_ether_port_deinit_all(struct rswitch_private *priv)
 {
 	unsigned int i;
 
-	for (i = 0; i < RSWITCH_NUM_PORTS; i++) {
+	rswitch_for_each_enabled_port(priv, i) {
 		phy_exit(priv->rdev[i]->serdes);
 		rswitch_ether_port_deinit_one(priv->rdev[i]);
 	}