From: Sergey Shtylyov <s.shtylyov@omprussia.ru>
To: Jens Axboe <axboe@kernel.dk>, <linux-ide@vger.kernel.org>
Subject: [PATCH 2/4] pata_ep93xx: deny IRQ0
Date: Sun, 21 Mar 2021 21:55:48 +0300 [thread overview]
Message-ID: <747c195a-25b9-1cc0-e65e-f66225b91c28@omprussia.ru> (raw)
In-Reply-To: <2e552c36-84a5-a642-a8f0-1395f77a1a6a@omprussia.ru>
If platform_get_irq() returns IRQ0 (considered invalid according to Linus)
the driver blithely passes it to ata_host_activate() that treats IRQ0 as
a sign that libata should use polling and thus complains about non-NULL
IRQ handler passed to it. Deny IRQ0 right away, returning -EINVAL from
the probe() method...
Fixes: 2fff27512600 ("PATA host controller driver for ep93xx")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru>
---
drivers/ata/pata_ep93xx.c | 4 ++++
1 file changed, 4 insertions(+)
Index: linux-block/drivers/ata/pata_ep93xx.c
===================================================================
--- linux-block.orig/drivers/ata/pata_ep93xx.c
+++ linux-block/drivers/ata/pata_ep93xx.c
@@ -931,6 +931,10 @@ static int ep93xx_pata_probe(struct plat
err = irq;
goto err_rel_gpio;
}
+ if (!irq) {
+ err = -EINVAL;
+ goto err_rel_gpio;
+ }
mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
ide_base = devm_ioremap_resource(&pdev->dev, mem_res);
next prev parent reply other threads:[~2021-03-21 18:56 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-21 18:50 [PATCH 0/4] Explicitly deny IRQ0 in the libata drivers Sergey Shtylyov
2021-03-21 18:54 ` [PATCH 1/4] pata_bk3710: deny IRQ0 Sergey Shtylyov
2021-03-21 18:55 ` Sergey Shtylyov [this message]
2021-03-21 18:57 ` [PATCH 3/4] pata_ftide010: " Sergey Shtylyov
2021-03-21 18:59 ` [PATCH 4/4] pata_imx: " Sergey Shtylyov
2021-03-21 19:06 ` Fabio Estevam
2021-09-18 20:49 ` Sergey Shtylyov
2021-09-20 12:45 ` Fabio Estevam
2021-09-20 12:52 ` Fabio Estevam
2021-09-20 16:42 ` Sergey Shtylyov
2021-09-20 16:41 ` Sergey Shtylyov
2021-05-10 20:48 ` [PATCH 0/4] Explicitly deny IRQ0 in the libata drivers Sergey Shtylyov
2021-09-04 18:57 ` Sergey Shtylyov
2021-09-04 21:25 ` Jens Axboe
2021-09-05 9:47 ` Sergey Shtylyov
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