dmaengine: qcom: gpi: Fix resource leaks as part of channel clean up

The gpi_ch_init() error handling paths do not fully clean up resources
when channel initialization fails.

The unwind paths iterate over the original channel pointer instead of
the channels stored in gpii->gchan[], preventing previously initialized
sibling channels from being properly reset and deallocated.

In addition, gpi_alloc_chan_resources() allocates ch_ring before calling
gpi_ch_init(), but does not release it when initialization fails,
resulting in a memory leak.

The event ring cleanup path also leaves the PM state unchanged after
freeing the ring. As a result, subsequent cleanup may incorrectly assume
that the ring is still allocated, leading to a redundant EV_CMD_DEALLOC
command and an attempt to deallocate an already released ring.

Fix the unwind paths to operate on the correct channels, release
ch_ring when channel initialization fails, and restore the event ring
PM state after freeing the ring.

Signed-off-by: Aniket Randive <aniket.randive@oss.qualcomm.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Mukesh Kumar Savaliya <mukesh.savaliya@oss.qualcomm.com>
Reviewed-by: Praveen Talari <praveen.talari@oss.qualcomm.com>
Link: https://patch.msgid.link/20260810-gpi_bug_fix-v2-1-60555394cbf9@oss.qualcomm.com
Link: https://patch.msgid.link/20260819-gpi_bug_fix-v3-1-4c97333e6f5b@oss.qualcomm.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

0 files changed, 0 insertions, 0 deletions