* [PATCH] pata_octeon_cf: avoid WARN_ON() in ata_host_activate()
@ 2021-05-18 20:38 Sergey Shtylyov
2021-05-18 21:23 ` Jens Axboe
0 siblings, 1 reply; 2+ messages in thread
From: Sergey Shtylyov @ 2021-05-18 20:38 UTC (permalink / raw)
To: Jens Axboe, linux-ide
Iff platform_get_irq() fails (or returns IRQ0) and thus the polling mode
has to be used, ata_host_activate() hits the WARN_ON() due to 'irq_handler'
parameter being non-NULL if the polling mode is selected. Let's only set
the pointer to the driver's IRQ handler if platform_get_irq() returns a
valid IRQ # -- this should avoid the unnecessary WARN_ON()...
Fixes: 3c929c6f5aa7 ("MIPS/OCTEON/ata: Convert pata_octeon_cf.c to use device tree.")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
---
This patch is against the 'master' branch of Jens Axboe's 'linux-block.git'
repo.
drivers/ata/pata_octeon_cf.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
Index: linux-block/drivers/ata/pata_octeon_cf.c
===================================================================
--- linux-block.orig/drivers/ata/pata_octeon_cf.c
+++ linux-block/drivers/ata/pata_octeon_cf.c
@@ -898,10 +898,11 @@ static int octeon_cf_probe(struct platfo
return -EINVAL;
}
- irq_handler = octeon_cf_interrupt;
i = platform_get_irq(dma_dev, 0);
- if (i > 0)
+ if (i > 0) {
irq = i;
+ irq_handler = octeon_cf_interrupt;
+ }
}
of_node_put(dma_node);
}
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] pata_octeon_cf: avoid WARN_ON() in ata_host_activate()
2021-05-18 20:38 [PATCH] pata_octeon_cf: avoid WARN_ON() in ata_host_activate() Sergey Shtylyov
@ 2021-05-18 21:23 ` Jens Axboe
0 siblings, 0 replies; 2+ messages in thread
From: Jens Axboe @ 2021-05-18 21:23 UTC (permalink / raw)
To: Sergey Shtylyov, linux-ide
On 5/18/21 2:38 PM, Sergey Shtylyov wrote:
> Iff platform_get_irq() fails (or returns IRQ0) and thus the polling mode
> has to be used, ata_host_activate() hits the WARN_ON() due to 'irq_handler'
> parameter being non-NULL if the polling mode is selected. Let's only set
> the pointer to the driver's IRQ handler if platform_get_irq() returns a
> valid IRQ # -- this should avoid the unnecessary WARN_ON()...
Applied, thanks.
--
Jens Axboe
^ permalink raw reply [flat|nested] 2+ messages in thread
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2021-05-18 20:38 [PATCH] pata_octeon_cf: avoid WARN_ON() in ata_host_activate() Sergey Shtylyov
2021-05-18 21:23 ` Jens Axboe
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