diff options
| author | Thomas Fourier <fourier.thomas@gmail.com> | 2025-06-10 16:29:11 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-20 18:30:33 +0200 |
| commit | 43c0e1c11bea231ac29385153ab44f04409e05ed (patch) | |
| tree | 72c70b1d2e0a7a7f765037530a9fa7cc47f560a9 | |
| parent | 419733db212d4842af1e8338d820aafe5e154c9b (diff) | |
(powerpc/512) Fix possible `dma_unmap_single()` on uninitialized pointer
[ Upstream commit 760b9b4f6de9a33ca56a05f950cabe82138d25bd ]
If the device configuration fails (if `dma_dev->device_config()`),
`sg_dma_address(&sg)` is not initialized and the jump to `err_dma_prep`
leads to calling `dma_unmap_single()` on `sg_dma_address(&sg)`.
Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250610142918.169540-2-fourier.thomas@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | arch/powerpc/platforms/512x/mpc512x_lpbfifo.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/powerpc/platforms/512x/mpc512x_lpbfifo.c b/arch/powerpc/platforms/512x/mpc512x_lpbfifo.c index 9668b052cd4b..f251e0f68262 100644 --- a/arch/powerpc/platforms/512x/mpc512x_lpbfifo.c +++ b/arch/powerpc/platforms/512x/mpc512x_lpbfifo.c @@ -240,10 +240,8 @@ static int mpc512x_lpbfifo_kick(void) dma_conf.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; /* Make DMA channel work with LPB FIFO data register */ - if (dma_dev->device_config(lpbfifo.chan, &dma_conf)) { - ret = -EINVAL; - goto err_dma_prep; - } + if (dma_dev->device_config(lpbfifo.chan, &dma_conf)) + return -EINVAL; sg_init_table(&sg, 1); |