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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2021-09-16 16:57:37 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-21 16:38:21 +0200 |
| commit | 517c7bf99bad3d6b9360558414aae634b7472d80 (patch) | |
| tree | b889784d97ef79192435065bccea6031f86aa553 /drivers | |
| parent | b55d37ef6b7db3eda9b4495a8d9b0a944ee8c67d (diff) | |
| download | linux-517c7bf99bad3d6b9360558414aae634b7472d80.tar.bz2 | |
usb: musb: tusb6010: uninitialized data in tusb_fifo_write_unaligned()
This is writing to the first 1 - 3 bytes of "val" and then writing all
four bytes to musb_writel(). The last byte is always going to be
garbage. Zero out the last bytes instead.
Fixes: 550a7375fe72 ("USB: Add MUSB and TUSB support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210916135737.GI25094@kili
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/musb/tusb6010.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c index c42937692207..c968ecda42aa 100644 --- a/drivers/usb/musb/tusb6010.c +++ b/drivers/usb/musb/tusb6010.c @@ -190,6 +190,7 @@ tusb_fifo_write_unaligned(void __iomem *fifo, const u8 *buf, u16 len) } if (len > 0) { /* Write the rest 1 - 3 bytes to FIFO */ + val = 0; memcpy(&val, buf, len); musb_writel(fifo, 0, val); } |