[PATCH -next] spi: spi-zynqmp-gqspi: Fix missing unlock on error in zynqmp_qspi_exec_op()

[PATCH -next] spi: spi-zynqmp-gqspi: Fix missing unlock on error in zynqmp_qspi_exec_op()

[Wei Yongjun]

Add the missing unlock before return from function zynqmp_qspi_exec_op()
in the error handling case.

Fixes: a0f65be6e880 ("spi: spi-zynqmp-gqspi: add mutex locking for exec_op")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
---
 drivers/spi/spi-zynqmp-gqspi.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-zynqmp-gqspi.c b/drivers/spi/spi-zynqmp-gqspi.c
index 9494da9aea40..1670b0aeaa23 100644
--- a/drivers/spi/spi-zynqmp-gqspi.c
+++ b/drivers/spi/spi-zynqmp-gqspi.c
@@ -965,8 +965,10 @@ static int zynqmp_qspi_exec_op(struct spi_mem *mem,
 
 	if (op->cmd.opcode) {
 		tmpbuf = kzalloc(op->cmd.nbytes, GFP_KERNEL | GFP_DMA);
-		if (!tmpbuf)
+		if (!tmpbuf) {
+			mutex_unlock(&xqspi->op_lock);
 			return -ENOMEM;
+		}
 		tmpbuf[0] = op->cmd.opcode;
 		reinit_completion(&xqspi->data_completion);
 		xqspi->txbuf = tmpbuf;

Re: [PATCH -next] spi: spi-zynqmp-gqspi: Fix missing unlock on error in zynqmp_qspi_exec_op()

[Mark Brown]

On Mon, 12 Apr 2021 16:00:25 +0000, Wei Yongjun wrote:
> Add the missing unlock before return from function zynqmp_qspi_exec_op()
> in the error handling case.

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next

Thanks!

[1/1] spi: spi-zynqmp-gqspi: Fix missing unlock on error in zynqmp_qspi_exec_op()
      commit: 6043357263fbe2df0bf0736d971ad5dce7d19dc1

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark