firmware: qcom: scm: Return -EOPNOTSUPP for unsupported SHM bridge enabling

When enabling SHM bridge, QTEE returns 0 and sets error 4 in result to
qcom_scm for unsupported platforms. Currently, tzmem interprets this as
an unknown error rather than recognizing it as an unsupported platform.

Error log:
[    0.177224] qcom_scm firmware:scm: error (____ptrval____): Failed to enable the TrustZone memory allocator
[    0.177244] qcom_scm firmware:scm: probe with driver qcom_scm failed with error 4

To address this, modify the function call qcom_scm_shm_bridge_enable()
to remap result to indicate an unsupported error. This way, tzmem will
correctly identify it as an unsupported platform case instead of
reporting it as an error.

Fixes: 178e19c0df1b ("firmware: qcom: scm: add support for SHM bridge operations")
Signed-off-by: Qingqing Zhou <[email protected]>
Co-developed-by: Kuldeep Singh <[email protected]>
Signed-off-by: Kuldeep Singh <[email protected]>
Reviewed-by: Bartosz Golaszewski <[email protected]>
Reviewed-by: Mukesh Ojha <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bjorn Andersson <[email protected]>

0 files changed, 0 insertions, 0 deletions