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spi: mediatek: Enable irq when pdata is ready

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[ Upstream commit c6f7874687f7027d7c4b2f53ff6e4d22850f915d ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ricardo Ribalda 2022-11-28 12:00:01 +01:00 committed by Greg Kroah-Hartman
parent e933c28aa5
commit 80cf2b219e
1 changed files with 7 additions and 5 deletions
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12
drivers/spi/spi-mt65xx.c
View File

@ -1192,11 +1192,6 @@ 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),
@ -1266,6 +1261,13 @@ 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;
}