hid: intel-ish-hid: Fix uninitialized variable 'rv' in ish_fw_xfer_direct_dma

commit d41bff05a61fb539f21e9bf0d39fac77f457434e upstream.

Fix the uninitialized symbol 'rv' in the function ish_fw_xfer_direct_dma
to resolve the following warning from the smatch tool:
drivers/hid/intel-ish-hid/ishtp-fw-loader.c:714 ish_fw_xfer_direct_dma()
error: uninitialized symbol 'rv'.
Initialize 'rv' to 0 to prevent undefined behavior from uninitialized
access.

Cc: stable@vger.kernel.org
Fixes: 91b228107da3 ("HID: intel-ish-hid: ISH firmware loader client driver")
Signed-off-by: SurajSonawane2415 <surajsonawane0215@gmail.com>
Link: https://patch.msgid.link/20241004075944.44932-1-surajsonawane0215@gmail.com
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/hid/intel-ish-hid/ishtp-fw-loader.c b/drivers/hid/intel-ish-hid/ishtp-fw-loader.c
index b6d6d119035ca0405a46c3b94d64f35ea5159be0..1bb5316c2a8b1ca9c2f275cf079ff58c89d1f580 100644 (file)
--- a/drivers/hid/intel-ish-hid/ishtp-fw-loader.c
+++ b/drivers/hid/intel-ish-hid/ishtp-fw-loader.c
@@ -630,7 +630,7 @@ static int ish_fw_xfer_direct_dma(struct ishtp_cl_data *client_data,
                                  const struct firmware *fw,
                                  const struct shim_fw_info fw_info)
 {
-       int rv;
+       int rv = 0;
        void *dma_buf;
        dma_addr_t dma_buf_phy;
        u32 fragment_offset, fragment_size, payload_max_size;