| Message ID | 20220826091851.1393266-1-patrice.chotard@foss.st.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | spi: stm32-qspi: Fix stm32_qspi_transfer_one_message() error path | expand |
Hi Mark Patch sent with incorrect commit title, a new one is in the pipe. Sorry for that Patrice On 8/26/22 11:18, patrice.chotard@foss.st.com wrote: > From: Patrice Chotard <patrice.chotard@foss.st.com> > > The patch a557fca630cc: "spi: stm32_qspi: Add transfer_one_message() > spi callback" from Aug 23, 2022, leads to the following Smatch static > checker warning: > > drivers/spi/spi-stm32-qspi.c:627 stm32_qspi_transfer_one_message() > error: uninitialized symbol 'ret'.Fix the following Smatch static checker warning: > > Fixes: a557fca630cc ("spi: stm32_qspi: Add transfer_one_message() spi callback") > Reported-by: Dan Carpenter <dan.carpenter@oracle.com> > Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> > --- > drivers/spi/spi-stm32-qspi.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > diff --git a/drivers/spi/spi-stm32-qspi.c b/drivers/spi/spi-stm32-qspi.c > index 92459daca95f..679fd1c34f7e 100644 > --- a/drivers/spi/spi-stm32-qspi.c > +++ b/drivers/spi/spi-stm32-qspi.c > @@ -562,7 +562,7 @@ static int stm32_qspi_transfer_one_message(struct spi_controller *ctrl, > struct spi_transfer *transfer; > struct spi_device *spi = msg->spi; > struct spi_mem_op op; > - int ret; > + int ret = 0; > > if (!spi->cs_gpiod) > return -EOPNOTSUPP; > @@ -592,8 +592,10 @@ static int stm32_qspi_transfer_one_message(struct spi_controller *ctrl, > dummy_bytes = transfer->len; > > /* if happens, means that message is not correctly built */ > - if (list_is_last(&transfer->transfer_list, &msg->transfers)) > + if (list_is_last(&transfer->transfer_list, &msg->transfers)) { > + ret = -EINVAL; > goto end_of_transfer; > + } > > transfer = list_next_entry(transfer, transfer_list); > }
diff --git a/drivers/spi/spi-stm32-qspi.c b/drivers/spi/spi-stm32-qspi.c index 92459daca95f..679fd1c34f7e 100644 --- a/drivers/spi/spi-stm32-qspi.c +++ b/drivers/spi/spi-stm32-qspi.c @@ -562,7 +562,7 @@ static int stm32_qspi_transfer_one_message(struct spi_controller *ctrl, struct spi_transfer *transfer; struct spi_device *spi = msg->spi; struct spi_mem_op op; - int ret; + int ret = 0; if (!spi->cs_gpiod) return -EOPNOTSUPP; @@ -592,8 +592,10 @@ static int stm32_qspi_transfer_one_message(struct spi_controller *ctrl, dummy_bytes = transfer->len; /* if happens, means that message is not correctly built */ - if (list_is_last(&transfer->transfer_list, &msg->transfers)) + if (list_is_last(&transfer->transfer_list, &msg->transfers)) { + ret = -EINVAL; goto end_of_transfer; + } transfer = list_next_entry(transfer, transfer_list); }