diff options
| author | Ricardo Ribalda <ribalda@chromium.org> | 2022-11-28 12:00:01 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-11-28 16:26:17 +0000 |
| commit | c6f7874687f7027d7c4b2f53ff6e4d22850f915d (patch) | |
| tree | f71aef40e2e137b3487a92b5a313ac71a939a03c /drivers/spi | |
| parent | 63d9a4d88499569210c445a862209515207c2732 (diff) | |
| download | linux-c6f7874687f7027d7c4b2f53ff6e4d22850f915d.tar.bz2 | |
spi: mediatek: Enable irq when pdata is ready
If the device does not come straight from reset, we might receive an IRQ
before we are ready to handle it.
Fixes:
[ 0.832328] Unable to handle kernel read from unreadable memory at virtual address 0000000000000010
[ 1.040343] Call trace:
[ 1.040347] mtk_spi_can_dma+0xc/0x40
...
[ 1.262265] start_kernel+0x338/0x42c
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20221128-spi-mt65xx-v1-0-509266830665@chromium.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-mt65xx.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c index 11aeae7fe7fc..f011b5ff6821 100644 --- a/drivers/spi/spi-mt65xx.c +++ b/drivers/spi/spi-mt65xx.c @@ -1189,11 +1189,6 @@ static int mtk_spi_probe(struct platform_device *pdev) else dma_set_max_seg_size(dev, SZ_256K); - ret = devm_request_irq(dev, irq, mtk_spi_interrupt, - IRQF_TRIGGER_NONE, dev_name(dev), master); - if (ret) - return dev_err_probe(dev, ret, "failed to register irq\n"); - mdata->parent_clk = devm_clk_get(dev, "parent-clk"); if (IS_ERR(mdata->parent_clk)) return dev_err_probe(dev, PTR_ERR(mdata->parent_clk), @@ -1263,6 +1258,13 @@ static int mtk_spi_probe(struct platform_device *pdev) return dev_err_probe(dev, ret, "failed to register master\n"); } + ret = devm_request_irq(dev, irq, mtk_spi_interrupt, + IRQF_TRIGGER_NONE, dev_name(dev), master); + if (ret) { + pm_runtime_disable(dev); + return dev_err_probe(dev, ret, "failed to register irq\n"); + } + return 0; } |