diff mbox series

[3/7] i2c: cht-wc: Use generic_handle_irq_safe().

Message ID 20220127113303.3012207-4-bigeasy@linutronix.de (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series Provide and use generic_handle_irq_safe() where appropriate. | expand

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Context Check Description
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
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 2 of 2 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, 17 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

Sebastian Andrzej Siewior Jan. 27, 2022, 11:32 a.m. UTC 
Instead of manually disabling interrupts before invoking use
generic_handle_irq() which can be invoked with enabled and disabled
interrupts.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
 drivers/i2c/busses/i2c-cht-wc.c | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

Comments

Hans de Goede Jan. 27, 2022, 11:48 a.m. UTC | #1 
Hi,

On 1/27/22 12:32, Sebastian Andrzej Siewior wrote:
> Instead of manually disabling interrupts before invoking use
> generic_handle_irq() which can be invoked with enabled and disabled
> interrupts.
> 
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

Thanks, patch looks good to me:

Reviewed-by: Hans de Goede <hdegoede@redhat.com>

Regards,

Hans


> ---
>  drivers/i2c/busses/i2c-cht-wc.c | 11 ++---------
>  1 file changed, 2 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/i2c/busses/i2c-cht-wc.c b/drivers/i2c/busses/i2c-cht-wc.c
> index 1cf68f85b2e11..8ccf0c928bb44 100644
> --- a/drivers/i2c/busses/i2c-cht-wc.c
> +++ b/drivers/i2c/busses/i2c-cht-wc.c
> @@ -99,15 +99,8 @@ static irqreturn_t cht_wc_i2c_adap_thread_handler(int id, void *data)
>  	 * interrupt handler as well, so running the client irq handler from
>  	 * this thread will cause things to lock up.
>  	 */
> -	if (reg & CHT_WC_EXTCHGRIRQ_CLIENT_IRQ) {
> -		/*
> -		 * generic_handle_irq expects local IRQs to be disabled
> -		 * as normally it is called from interrupt context.
> -		 */
> -		local_irq_disable();
> -		generic_handle_irq(adap->client_irq);
> -		local_irq_enable();
> -	}
> +	if (reg & CHT_WC_EXTCHGRIRQ_CLIENT_IRQ)
> +		generic_handle_irq_safe(adap->client_irq);
>  
>  	return IRQ_HANDLED;
>  }
>
Wolfram Sang Jan. 27, 2022, 5:16 p.m. UTC | #2 
On Thu, Jan 27, 2022 at 12:32:59PM +0100, Sebastian Andrzej Siewior wrote:
> Instead of manually disabling interrupts before invoking use
> generic_handle_irq() which can be invoked with enabled and disabled

generic_handle_irq_safe()

> interrupts.
> 
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

Besides that:

Acked-by: Wolfram Sang <wsa@kernel.org>
Sebastian Andrzej Siewior Jan. 31, 2022, 11:10 a.m. UTC | #3 
On 2022-01-27 18:16:53 [+0100], Wolfram Sang wrote:
> On Thu, Jan 27, 2022 at 12:32:59PM +0100, Sebastian Andrzej Siewior wrote:
> > Instead of manually disabling interrupts before invoking use
> > generic_handle_irq() which can be invoked with enabled and disabled
> 
> generic_handle_irq_safe()

Yes, thank you.

Sebastian
diff mbox series

Patch

diff --git a/drivers/i2c/busses/i2c-cht-wc.c b/drivers/i2c/busses/i2c-cht-wc.c
index 1cf68f85b2e11..8ccf0c928bb44 100644
--- a/drivers/i2c/busses/i2c-cht-wc.c
+++ b/drivers/i2c/busses/i2c-cht-wc.c
@@ -99,15 +99,8 @@  static irqreturn_t cht_wc_i2c_adap_thread_handler(int id, void *data)
 	 * interrupt handler as well, so running the client irq handler from
 	 * this thread will cause things to lock up.
 	 */
-	if (reg & CHT_WC_EXTCHGRIRQ_CLIENT_IRQ) {
-		/*
-		 * generic_handle_irq expects local IRQs to be disabled
-		 * as normally it is called from interrupt context.
-		 */
-		local_irq_disable();
-		generic_handle_irq(adap->client_irq);
-		local_irq_enable();
-	}
+	if (reg & CHT_WC_EXTCHGRIRQ_CLIENT_IRQ)
+		generic_handle_irq_safe(adap->client_irq);
 
 	return IRQ_HANDLED;
 }