Re: [PATCH net resend] net: qca_spi: Avoid high load if QCA7000 is not available

From: Simon Horman
Date: Wed Jun 14 2023 - 12:58:32 EST


On Wed, Jun 14, 2023 at 01:17:14PM +0200, Stefan Wahren wrote:
> In case the QCA7000 is not available via SPI (e.g. in reset),
> the driver will cause a high load. The reason for this is
> that the synchronization is never finished and schedule()
> is never called. Since the synchronization is not timing
> critical, it's safe to drop this from the scheduling condition.
>
> Signed-off-by: Stefan Wahren <stefan.wahren@xxxxxxxxxxxxxx>
> Fixes: 291ab06ecf67 ("net: qualcomm: new Ethernet over SPI driver for
> QCA7000")

Hi Stefan,

the Fixes should be on a single line.

Fixes: 291ab06ecf67 ("net: qualcomm: new Ethernet over SPI driver for QCA7000")

> ---
> drivers/net/ethernet/qualcomm/qca_spi.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/net/ethernet/qualcomm/qca_spi.c
> b/drivers/net/ethernet/qualcomm/qca_spi.c

Likewise, the above two lines should be a single line.
Unfortunately it seems that because it is not git doesn't apply
this patch, which creates problems for automation linked to patchwork.

I think it would be best to repost after resolving these minor issues.

> index bba1947792ea16..90f18ea4c28ba1 100644
> --- a/drivers/net/ethernet/qualcomm/qca_spi.c
> +++ b/drivers/net/ethernet/qualcomm/qca_spi.c
> @@ -582,8 +582,7 @@ qcaspi_spi_thread(void *data)
> while (!kthread_should_stop()) {
> set_current_state(TASK_INTERRUPTIBLE);
> if ((qca->intr_req == qca->intr_svc) &&
> - (qca->txr.skb[qca->txr.head] == NULL) &&
> - (qca->sync == QCASPI_SYNC_READY))
> + !qca->txr.skb[qca->txr.head])
> schedule();
>
> set_current_state(TASK_RUNNING);
>

--
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