Clang warns (or errors with CONFIG_WERROR=y):
drivers/dma/xilinx/xdma.c:894:3: error: variable 'desc' is uninitialized when used here [-Werror,-Wuninitialized]
894 | desc->error = true;
| ^~~~
The initialization of desc was moved too far forward, move it back so
that this assignment does not result in a potential crash at runtime
while clearing up the warning.
Closes: https://github.com/ClangBuiltLinux/linux/issues/1972
Fixes: 2f8f90cd2f8d ("dmaengine: xilinx: xdma: Implement interleaved DMA transfers")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/20231222-dma-xilinx-xdma-clang-fixes-v1-2-84a18ff184d2@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
if (ret)
goto out;
+ desc = to_xdma_desc(vd);
+
st &= XDMA_CHAN_STATUS_MASK;
if ((st & XDMA_CHAN_ERROR_MASK) ||
!(st & (CHAN_CTRL_IE_DESC_COMPLETED | CHAN_CTRL_IE_DESC_STOPPED))) {
if (ret)
goto out;
- desc = to_xdma_desc(vd);
if (desc->interleaved_dma) {
xchan->busy = false;
desc->completed_desc_num += complete_desc_num;