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| author | Sergey Shtylyov <s.shtylyov@omprussia.ru> | 2021-03-28 00:13:49 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-03-30 20:23:07 -0600 |
| commit | e6471a65fdd5efbb8dd2732dd0f063f960685ceb (patch) | |
| tree | eec12b26421cf0c55488984af1de10e3d88c1e36 /drivers | |
| parent | ff237990277ff3a94ba4848c991bef24fd175cc0 (diff) | |
| download | linux-e6471a65fdd5efbb8dd2732dd0f063f960685ceb.tar.bz2 | |
sata_mv: add IRQ checks
The function mv_platform_probe() neglects to check the results of the
calls to platform_get_irq() and irq_of_parse_and_map() and blithely
passes them to ata_host_activate() -- while the latter only checks
for IRQ0 (treating it as a polling mode indicattion) and passes the
negative values to devm_request_irq() causing it to fail as it takes
unsigned values for the IRQ #...
Add to mv_platform_probe() the proper IRQ checks to pass the positive IRQ
#s to ata_host_activate(), propagate upstream the negative error codes,
and override the IRQ0 with -EINVAL (as we don't want the polling mode).
Fixes: f351b2d638c3 ("sata_mv: Support SoC controllers")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru>
Link: https://lore.kernel.org/r/51436f00-27a1-e20b-c21b-0e817e0a7c86@omprussia.ru
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ata/sata_mv.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c index bd23d63435cb..c8867c12c0b8 100644 --- a/drivers/ata/sata_mv.c +++ b/drivers/ata/sata_mv.c @@ -4097,6 +4097,10 @@ static int mv_platform_probe(struct platform_device *pdev) n_ports = mv_platform_data->n_ports; irq = platform_get_irq(pdev, 0); } + if (irq < 0) + return irq; + if (!irq) + return -EINVAL; host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports); hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL); |