This is a note to let you know that I've just added the patch titled
mtd: spi-nor: hisi-sfc: Remove excessive clk_disable_unprepare()
to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mtd-spi-nor-hisi-sfc-remove-excessive-clk_disable_un.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 7440b905cbd2313b4121c577fea0155b73dd748a
Author: Evgeny Novikov <novikov@xxxxxxxxx>
Date: Fri Jul 9 17:45:29 2021 +0300
mtd: spi-nor: hisi-sfc: Remove excessive clk_disable_unprepare()
[ Upstream commit 78e4d342187625585932bb437ec26e1060f7fc6f ]
hisi_spi_nor_probe() invokes clk_disable_unprepare() on all paths after
successful call of clk_prepare_enable(). Besides, the clock is enabled by
hispi_spi_nor_prep() and disabled by hispi_spi_nor_unprep(). So at remove
time it is not possible to have the clock enabled. The patch removes
excessive clk_disable_unprepare() from hisi_spi_nor_remove().
Found by Linux Driver Verification project (linuxtesting.org).
Fixes: e523f11141bd ("mtd: spi-nor: add hisilicon spi-nor flash controller driver")
Signed-off-by: Evgeny Novikov <novikov@xxxxxxxxx>
Signed-off-by: Tudor Ambarus <tudor.ambarus@xxxxxxxxxxxxx>
Reviewed-by: Pratyush Yadav <p.yadav@xxxxxx>
Link: https://lore.kernel.org/r/20210709144529.31379-1-novikov@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/mtd/spi-nor/hisi-sfc.c b/drivers/mtd/spi-nor/hisi-sfc.c
index 9209d225e3152..e84a310dcc6cb 100644
--- a/drivers/mtd/spi-nor/hisi-sfc.c
+++ b/drivers/mtd/spi-nor/hisi-sfc.c
@@ -485,7 +485,6 @@ static int hisi_spi_nor_remove(struct platform_device *pdev)
hisi_spi_nor_unregister_all(host);
mutex_destroy(&host->lock);
- clk_disable_unprepare(host->clk);
return 0;
}
