Sumit Kumar 6f18d174b7 bus: mhi: ep: Update read pointer only after buffer is written ... Inside mhi_ep_ring_add_element, the read pointer (rd_offset) is updated before the buffer is written, potentially causing race conditions where the host sees an updated read pointer before the buffer is actually written. Updating rd_offset prematurely can lead to the host accessing an uninitialized or incomplete element, resulting in data corruption. Invoke the buffer write before updating rd_offset to ensure the element is fully written before signaling its availability. Fixes: bbdcba57a1 ("bus: mhi: ep: Add support for ring management") cc: stable@vger.kernel.org Co-developed-by: Youssef Samir <quic_yabdulra@quicinc.com> Signed-off-by: Youssef Samir <quic_yabdulra@quicinc.com> Signed-off-by: Sumit Kumar <quic_sumk@quicinc.com> Reviewed-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com> Reviewed-by: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://patch.msgid.link/20250409-rp_fix-v1-1-8cf1fa22ed28@quicinc.com Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>		2025-04-24 10:34:51 +05:30
..
internal.h	bus: mhi: ep: Add support for async DMA write operation	2023-12-15 14:20:03 +05:30
Kconfig
main.c	Driver core changes for 6.11-rc1	2024-07-25 10:42:22 -07:00
Makefile	bus: mhi: ep: Add support for managing MHI state machine	2022-04-26 13:17:41 +02:00
mmio.c	bus: mhi: ep: Add support for managing MMIO registers	2022-04-26 13:17:41 +02:00
ring.c	bus: mhi: ep: Update read pointer only after buffer is written	2025-04-24 10:34:51 +05:30
sm.c	bus: mhi: ep: Change state_lock to mutex	2023-01-27 12:31:41 +05:30