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| author | Patrice Chotard <patrice.chotard@foss.st.com> | 2024-06-18 16:29:50 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-06-27 14:49:14 +0300 |
| commit | 23b1940096b6d0719506e91df7cf3eae12949298 (patch) | |
| tree | 2e68d537cbc3179850b009947ef94d33d1a69ca6 | |
| parent | 299c0cb3aaab34a84bf0ebc855b6c1479a4020ca (diff) | |
| download | linux-23b1940096b6d0719506e91df7cf3eae12949298.tar.xz | |
spi: stm32: qspi: Clamp stm32_qspi_get_mode() output to CCR_BUSWIDTH_4
commit 63deee52811b2f84ed2da55ad47252f0e8145d62 upstream.
In case usage of OCTAL mode, buswidth parameter can take the value 8.
As return value of stm32_qspi_get_mode() is used to configure fields
of CCR registers that are 2 bits only (fields IMODE, ADMODE, ADSIZE,
DMODE), clamp return value of stm32_qspi_get_mode() to 4.
Fixes: a557fca630cc ("spi: stm32_qspi: Add transfer_one_message() spi callback")
Cc: stable@vger.kernel.org
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Link: https://msgid.link/r/20240618132951.2743935-3-patrice.chotard@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/spi/spi-stm32-qspi.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/spi/spi-stm32-qspi.c b/drivers/spi/spi-stm32-qspi.c index 8ee6b3e182be..f37dd7dbb9d2 100644 --- a/drivers/spi/spi-stm32-qspi.c +++ b/drivers/spi/spi-stm32-qspi.c @@ -349,7 +349,7 @@ static int stm32_qspi_wait_poll_status(struct stm32_qspi *qspi) static int stm32_qspi_get_mode(u8 buswidth) { - if (buswidth == 4) + if (buswidth >= 4) return CCR_BUSWIDTH_4; return buswidth; |