The ci_req->hw_buf can be NULL, test whether it is and if so, avoid accessing it. Else, the system may crash.
Signed-off-by: Marek Vasut marex@denx.de Cc: Peter Chen peter.chen@nxp.com Cc: Li Jun jun.li@nxp.com Cc: Peng Fan peng.fan@nxp.com --- drivers/usb/gadget/ci_udc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/ci_udc.c b/drivers/usb/gadget/ci_udc.c index 226a9e6d671..542684c1c30 100644 --- a/drivers/usb/gadget/ci_udc.c +++ b/drivers/usb/gadget/ci_udc.c @@ -402,6 +402,9 @@ align:
flush: hwaddr = (unsigned long)ci_req->hw_buf; + if (!hwaddr) + return 0; + aligned_used_len = roundup(req->length, ARCH_DMA_MINALIGN); flush_dcache_range(hwaddr, hwaddr + aligned_used_len);
@@ -415,7 +418,7 @@ static void ci_debounce(struct ci_req *ci_req, int in) unsigned long hwaddr = (unsigned long)ci_req->hw_buf; uint32_t aligned_used_len;
- if (in) + if (in || !hwaddr) return;
aligned_used_len = roundup(req->actual, ARCH_DMA_MINALIGN);