cf0fd40445
The imx_scu_call_rpc function returns the result inside the same "msg" struct containing the transmitted message. This is implemented by holding a pointer to msg (which is usually on the stack) in sc_imx_rpc and writing to it from imx_scu_rx_callback. This means that if the have_resp parameter is incorrect or SCU sends an unexpected response for any reason the most likely result is kernel stack corruption. Fix this by only setting sc_imx_rpc.msg for the duration of the imx_scu_call_rpc call and warning in imx_scu_rx_callback if unset. Print the unexpected response data to help debugging. Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com> Acked-by: Anson Huang <Anson.Huang@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org> |
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| .. | ||
| imx-dsp.c | ||
| imx-scu-irq.c | ||
| imx-scu.c | ||
| Kconfig | ||
| Makefile | ||
| misc.c | ||
| scu-pd.c | ||