diff options
| author | Ricardo Ribalda <ribalda@chromium.org> | 2022-11-28 14:00:01 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-02-25 13:25:39 +0300 |
| commit | 80cf2b219ebc7e724e0f70ae815aea53b1768b19 (patch) | |
| tree | 09dbdefaca1836600ceaa7960d0b71274d33d4e9 /drivers | |
| parent | e933c28aa5cd1536bb69967763a88d5876e54cdb (diff) | |
| download | linux-80cf2b219ebc7e724e0f70ae815aea53b1768b19.tar.xz | |
spi: mediatek: Enable irq when pdata is ready
[ 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>
Diffstat (limited to 'drivers')
| -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 d6aff909fc36..6de8360e5c2a 100644 --- a/drivers/spi/spi-mt65xx.c +++ b/drivers/spi/spi-mt65xx.c @@ -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; } |