'select' does not work on config options in a 'choice', so currently it is possible to enable QCOMTEE without QCOM_TZMEM_MODE_SHMBRIDGE, even though this is needed at runtime.
There are no users of the generic allocator option, QCOM_TZMEM_MODE_GENERIC, so let's remove it. Then, we can remove the containing choice..endchoice, which allows the 'select' to work as intended.
Suggested-by: Arnd Bergmann arnd@arndb.de Signed-off-by: Julian Braha julianbraha@gmail.com --- Changes since v1: - remove TZMEM_MODE_GENERIC instead of removing the dead select
Link: https://lore.kernel.org/all/20260715092539.18384-1-julianbraha@gmail.com/ --- drivers/firmware/qcom/Kconfig | 26 +++++--------------------- drivers/firmware/qcom/qcom_tzmem.c | 21 --------------------- 2 files changed, 5 insertions(+), 42 deletions(-)
diff --git a/drivers/firmware/qcom/Kconfig b/drivers/firmware/qcom/Kconfig index c7f8413ab996..d99e09c5fa18 100644 --- a/drivers/firmware/qcom/Kconfig +++ b/drivers/firmware/qcom/Kconfig @@ -34,33 +34,17 @@ config QCOM_TZMEM tristate select GENERIC_ALLOCATOR
-choice - prompt "TrustZone interface memory allocator mode" - depends on QCOM_TZMEM - default QCOM_TZMEM_MODE_GENERIC - help - Selects the mode of the memory allocator providing memory buffers of - suitable format for sharing with the TrustZone. If in doubt, select - 'Generic'. - -config QCOM_TZMEM_MODE_GENERIC - bool "Generic" - help - Use the generic allocator mode. The memory is page-aligned, non-cachable - and physically contiguous. - config QCOM_TZMEM_MODE_SHMBRIDGE - bool "SHM Bridge" + bool "TrustZone interface memory allocator: SHM Bridge" + depends on QCOM_TZMEM help - Use Qualcomm Shared Memory Bridge. The memory has the same alignment as - in the 'Generic' allocator but is also explicitly marked as an SHM Bridge - buffer. + Use Qualcomm Shared Memory Bridge as memory allocator. The memory has the + same alignment as in the 'Generic' allocator but is also explicitly marked + as an SHM Bridge buffer.
With this selected, all buffers passed to the TrustZone must be allocated using the TZMem allocator or else the TrustZone will refuse to use them.
-endchoice - config QCOM_QSEECOM bool "Qualcomm QSEECOM interface driver" depends on QCOM_SCM=y diff --git a/drivers/firmware/qcom/qcom_tzmem.c b/drivers/firmware/qcom/qcom_tzmem.c index 0635cbeacfc8..5b3e5a3ad1ae 100644 --- a/drivers/firmware/qcom/qcom_tzmem.c +++ b/drivers/firmware/qcom/qcom_tzmem.c @@ -49,25 +49,6 @@ static struct device *qcom_tzmem_dev; static RADIX_TREE(qcom_tzmem_chunks, GFP_ATOMIC); static DEFINE_SPINLOCK(qcom_tzmem_chunks_lock);
-#if IS_ENABLED(CONFIG_QCOM_TZMEM_MODE_GENERIC) - -static int qcom_tzmem_init(void) -{ - return 0; -} - -static int qcom_tzmem_init_area(struct qcom_tzmem_area *area) -{ - return 0; -} - -static void qcom_tzmem_cleanup_area(struct qcom_tzmem_area *area) -{ - -} - -#elif IS_ENABLED(CONFIG_QCOM_TZMEM_MODE_SHMBRIDGE) - #include <linux/firmware/qcom/qcom_scm.h> #include <linux/of.h>
@@ -189,8 +170,6 @@ static void qcom_tzmem_cleanup_area(struct qcom_tzmem_area *area) kfree(handle); }
-#endif /* CONFIG_QCOM_TZMEM_MODE_SHMBRIDGE */ - static int qcom_tzmem_pool_add_memory(struct qcom_tzmem_pool *pool, size_t size, gfp_t gfp) {