staging: rtl8723bs: hal: Add null check after memory allocation

Add NULL check post call to rtw_zmalloc.

Signed-off-by: Hariprasad Kelam <hariprasad.kelam@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/rtl8723bs/hal/sdio_ops.c b/drivers/staging/rtl8723bs/hal/sdio_ops.c
index 0b8e4e6..399dbb4 100644 (file)
--- a/drivers/staging/rtl8723bs/hal/sdio_ops.c
+++ b/drivers/staging/rtl8723bs/hal/sdio_ops.c
@@ -816,6 +816,9 @@ void clearinterrupt8723bsdio(struct adapter *adapter)
        haldata = GET_HAL_DATA(adapter);
        clear = rtw_zmalloc(4);
 
+       if (!clear)
+               return;
+
        /*  Clear corresponding HISR Content if needed */
        *(__le32 *)clear = cpu_to_le32(haldata->sdio_hisr & MASK_SDIO_HISR_CLEAR);
        if (*(__le32 *)clear) {