| Message ID | 20221223074657.810346-1-linmq006@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2] input: raspberrypi-ts: Fix refcount leak in rpi_ts_probe | expand |
On Fri, Dec 23, 2022 at 11:46, Miaoqian Lin <linmq006@gmail.com> wrote: > rpi_firmware_get() take reference, we need to release it in error paths > as well. Use devm_rpi_firmware_get() helper to handling the resources. > Also remove the existing rpi_firmware_put(). > > Fixes: 0b9f28fed3f7 ("Input: add official Raspberry Pi's touchscreen driver") > Fixes: 3b8ddff780b7 ("input: raspberrypi-ts: Release firmware handle when not needed") > Signed-off-by: Miaoqian Lin <linmq006@gmail.com> > --- > changes in v2: > - use devm_rpi_firmware_get(). > - remove rpi_firmware_put(). Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> > --- > drivers/input/touchscreen/raspberrypi-ts.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/drivers/input/touchscreen/raspberrypi-ts.c b/drivers/input/touchscreen/raspberrypi-ts.c > index 5000f5fd9ec3..45c575df994e 100644 > --- a/drivers/input/touchscreen/raspberrypi-ts.c > +++ b/drivers/input/touchscreen/raspberrypi-ts.c > @@ -134,7 +134,7 @@ static int rpi_ts_probe(struct platform_device *pdev) > return -ENOENT; > } > > - fw = rpi_firmware_get(fw_node); > + fw = devm_rpi_firmware_get(&pdev->dev, fw_node); > of_node_put(fw_node); > if (!fw) > return -EPROBE_DEFER; > @@ -160,7 +160,6 @@ static int rpi_ts_probe(struct platform_device *pdev) > touchbuf = (u32)ts->fw_regs_phys; > error = rpi_firmware_property(fw, RPI_FIRMWARE_FRAMEBUFFER_SET_TOUCHBUF, > &touchbuf, sizeof(touchbuf)); > - rpi_firmware_put(fw); > if (error || touchbuf != 0) { > dev_warn(dev, "Failed to set touchbuf, %d\n", error); > return error; > -- > 2.25.1
On Fri, Dec 23, 2022 at 11:46:53AM +0400, Miaoqian Lin wrote: > rpi_firmware_get() take reference, we need to release it in error paths > as well. Use devm_rpi_firmware_get() helper to handling the resources. > Also remove the existing rpi_firmware_put(). > > Fixes: 0b9f28fed3f7 ("Input: add official Raspberry Pi's touchscreen driver") > Fixes: 3b8ddff780b7 ("input: raspberrypi-ts: Release firmware handle when not needed") > Signed-off-by: Miaoqian Lin <linmq006@gmail.com> Applied, thank you.
diff --git a/drivers/input/touchscreen/raspberrypi-ts.c b/drivers/input/touchscreen/raspberrypi-ts.c index 5000f5fd9ec3..45c575df994e 100644 --- a/drivers/input/touchscreen/raspberrypi-ts.c +++ b/drivers/input/touchscreen/raspberrypi-ts.c @@ -134,7 +134,7 @@ static int rpi_ts_probe(struct platform_device *pdev) return -ENOENT; } - fw = rpi_firmware_get(fw_node); + fw = devm_rpi_firmware_get(&pdev->dev, fw_node); of_node_put(fw_node); if (!fw) return -EPROBE_DEFER; @@ -160,7 +160,6 @@ static int rpi_ts_probe(struct platform_device *pdev) touchbuf = (u32)ts->fw_regs_phys; error = rpi_firmware_property(fw, RPI_FIRMWARE_FRAMEBUFFER_SET_TOUCHBUF, &touchbuf, sizeof(touchbuf)); - rpi_firmware_put(fw); if (error || touchbuf != 0) { dev_warn(dev, "Failed to set touchbuf, %d\n", error); return error;
rpi_firmware_get() take reference, we need to release it in error paths as well. Use devm_rpi_firmware_get() helper to handling the resources. Also remove the existing rpi_firmware_put(). Fixes: 0b9f28fed3f7 ("Input: add official Raspberry Pi's touchscreen driver") Fixes: 3b8ddff780b7 ("input: raspberrypi-ts: Release firmware handle when not needed") Signed-off-by: Miaoqian Lin <linmq006@gmail.com> --- changes in v2: - use devm_rpi_firmware_get(). - remove rpi_firmware_put(). --- drivers/input/touchscreen/raspberrypi-ts.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)