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ARM: stm32mp: Do not acquire RIFSC semaphore if CID filtering is disabled

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If the CID filtering is enabled, the semaphore mode is disabled as well.
To avoid an incorrect behavior and error trace, add a check of CID
filtering state before acquiring the semaphore.

Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
This commit is contained in:
Gatien Chevallier
2026-02-10 11:26:03 +01:00
committed by Patrice Chotard
parent 20727a083f
commit 5f92eef2f9
1 changed files with 1 additions and 1 deletions
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2
arch/arm/mach-stm32mp/stm32mp2/rifsc.c
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@@ -208,7 +208,7 @@ int stm32_rifsc_grant_access_by_id(ofnode device_node, u32 id)
* If the peripheral is in semaphore mode, take the semaphore so that
* the CID1 has the ownership.
*/
if (cid_reg_value & CIDCFGR_SEMEN &&
if (cid_reg_value & CIDCFGR_CFEN && cid_reg_value & CIDCFGR_SEMEN &&
(FIELD_GET(RIFSC_RISC_SEMWL_MASK, cid_reg_value) & BIT(RIF_CID1))) {
err = stm32_rifsc_acquire_semaphore(rifsc_base, id);
if (err) {