6.6-stable review patch. If anyone has any objections, please let me know.
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From: Patrice Chotard patrice.chotard@foss.st.com
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 --- drivers/spi/spi-stm32-qspi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- 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(s
static int stm32_qspi_get_mode(u8 buswidth) { - if (buswidth == 4) + if (buswidth >= 4) return CCR_BUSWIDTH_4;
return buswidth;