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mmc: sh_mmcif: sg_miter must not be atomic

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All the sglist iterations happen in the *threaded* interrupt handler and
that context is not atomic, so don't request an atomic sglist miter. Using
an atomic miter results in "BUG: scheduling while atomic" splats.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Fixes: 27b57277d9 ("mmc: sh_mmcif: Use sg_miter for PIO")
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20240221-fix-sh-mmcif-v2-1-5e521eb25ae4@linaro.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Linus Walleij 2024-02-21 22:23:00 +01:00 committed by Ulf Hansson
parent 44d41bf65a
commit 727cba706d
1 changed files with 4 additions and 4 deletions
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8
drivers/mmc/host/sh_mmcif.c
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@ -607,7 +607,7 @@ static void sh_mmcif_single_read(struct sh_mmcif_host *host,
BLOCK_SIZE_MASK) + 3;
sg_miter_start(&host->sg_miter, data->sg, data->sg_len,
SG_MITER_ATOMIC | SG_MITER_TO_SG);
SG_MITER_TO_SG);
host->wait_for = MMCIF_WAIT_FOR_READ;
@ -662,7 +662,7 @@ static void sh_mmcif_multi_read(struct sh_mmcif_host *host,
BLOCK_SIZE_MASK;
sg_miter_start(&host->sg_miter, data->sg, data->sg_len,
SG_MITER_ATOMIC | SG_MITER_TO_SG);
SG_MITER_TO_SG);
host->wait_for = MMCIF_WAIT_FOR_MREAD;
@ -710,7 +710,7 @@ static void sh_mmcif_single_write(struct sh_mmcif_host *host,
BLOCK_SIZE_MASK) + 3;
sg_miter_start(&host->sg_miter, data->sg, data->sg_len,
SG_MITER_ATOMIC | SG_MITER_FROM_SG);
SG_MITER_FROM_SG);
host->wait_for = MMCIF_WAIT_FOR_WRITE;
@ -765,7 +765,7 @@ static void sh_mmcif_multi_write(struct sh_mmcif_host *host,
BLOCK_SIZE_MASK;
sg_miter_start(&host->sg_miter, data->sg, data->sg_len,
SG_MITER_ATOMIC | SG_MITER_FROM_SG);
SG_MITER_FROM_SG);
host->wait_for = MMCIF_WAIT_FOR_MWRITE;