Merge tag 'asm-generic-fixes-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic fixes from Arnd Bergmann:
 "There is one build fix for Arm platforms that ended up impacting most
  architectures because of the way the drivers/firmware Kconfig file is
  wired up:

  The CONFIG_QCOM_SCM dependency have caused a number of randconfig
  regressions over time, and some still remain in v5.15-rc4. The fix we
  agreed on in the end is to make this symbol selected by any driver
  using it, and then building it even for non-Arm platforms with
  CONFIG_COMPILE_TEST.

  To make this work on all architectures, the drivers/firmware/Kconfig
  file needs to be included for all architectures to make the symbol
  itself visible.

  In a separate discussion, we found that a sound driver patch that is
  pending for v5.16 needs the same change to include this Kconfig file,
  so the easiest solution seems to have my Kconfig rework included in
  v5.15.

  Finally, the branch also includes a small unrelated build fix for
  NOMMU architectures"

Link: https://lore.kernel.org/all/20210928153508.101208f8@canb.auug.org.au/
Link: https://lore.kernel.org/all/20210928075216.4193128-1-arnd@kernel.org/
Link: https://lore.kernel.org/all/20211007151010.333516-1-arnd@kernel.org/

* tag 'asm-generic-fixes-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  asm-generic/io.h: give stub iounmap() on !MMU same prototype as elsewhere
  qcom_scm: hide Kconfig symbol
  firmware: include drivers/firmware/Kconfig unconditionally

3 files changed, 11 insertions, 72 deletions

diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
index cc7338f9e0d1..7ce93aaf69f8 100644
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h
@@ -957,7 +957,7 @@ static inline void __iomem *ioremap(phys_addr_t offset, size_t size)
 
 #ifndef iounmap
 #define iounmap iounmap
-static inline void iounmap(void __iomem *addr)
+static inline void iounmap(volatile void __iomem *addr)
 {
 }
 #endif
diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h
index 7d1cabe15262..63ccb5252190 100644
--- a/include/linux/arm-smccc.h
+++ b/include/linux/arm-smccc.h
@@ -321,10 +321,20 @@ asmlinkage unsigned long __arm_smccc_sve_check(unsigned long x0);
  * from register 0 to 3 on return from the SMC instruction.  An optional
  * quirk structure provides vendor specific behavior.
  */
+#ifdef CONFIG_HAVE_ARM_SMCCC
 asmlinkage void __arm_smccc_smc(unsigned long a0, unsigned long a1,
 			unsigned long a2, unsigned long a3, unsigned long a4,
 			unsigned long a5, unsigned long a6, unsigned long a7,
 			struct arm_smccc_res *res, struct arm_smccc_quirk *quirk);
+#else
+static inline void __arm_smccc_smc(unsigned long a0, unsigned long a1,
+			unsigned long a2, unsigned long a3, unsigned long a4,
+			unsigned long a5, unsigned long a6, unsigned long a7,
+			struct arm_smccc_res *res, struct arm_smccc_quirk *quirk)
+{
+	*res = (struct arm_smccc_res){};
+}
+#endif
 
 /**
  * __arm_smccc_hvc() - make HVC calls
diff --git a/include/linux/qcom_scm.h b/include/linux/qcom_scm.h
index c0475d1c9885..81cad9e1e412 100644
--- a/include/linux/qcom_scm.h
+++ b/include/linux/qcom_scm.h
@@ -61,7 +61,6 @@ enum qcom_scm_ice_cipher {
 #define QCOM_SCM_PERM_RW (QCOM_SCM_PERM_READ | QCOM_SCM_PERM_WRITE)
 #define QCOM_SCM_PERM_RWX (QCOM_SCM_PERM_RW | QCOM_SCM_PERM_EXEC)
 
-#if IS_ENABLED(CONFIG_QCOM_SCM)
 extern bool qcom_scm_is_available(void);
 
 extern int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus);
@@ -115,74 +114,4 @@ extern int qcom_scm_lmh_dcvsh(u32 payload_fn, u32 payload_reg, u32 payload_val,
 extern int qcom_scm_lmh_profile_change(u32 profile_id);
 extern bool qcom_scm_lmh_dcvsh_available(void);
 
-#else
-
-#include <linux/errno.h>
-
-static inline bool qcom_scm_is_available(void) { return false; }
-
-static inline int qcom_scm_set_cold_boot_addr(void *entry,
-		const cpumask_t *cpus) { return -ENODEV; }
-static inline int qcom_scm_set_warm_boot_addr(void *entry,
-		const cpumask_t *cpus) { return -ENODEV; }
-static inline void qcom_scm_cpu_power_down(u32 flags) {}
-static inline u32 qcom_scm_set_remote_state(u32 state,u32 id)
-		{ return -ENODEV; }
-
-static inline int qcom_scm_pas_init_image(u32 peripheral, const void *metadata,
-		size_t size) { return -ENODEV; }
-static inline int qcom_scm_pas_mem_setup(u32 peripheral, phys_addr_t addr,
-		phys_addr_t size) { return -ENODEV; }
-static inline int qcom_scm_pas_auth_and_reset(u32 peripheral)
-		{ return -ENODEV; }
-static inline int qcom_scm_pas_shutdown(u32 peripheral) { return -ENODEV; }
-static inline bool qcom_scm_pas_supported(u32 peripheral) { return false; }
-
-static inline int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val)
-		{ return -ENODEV; }
-static inline int qcom_scm_io_writel(phys_addr_t addr, unsigned int val)
-		{ return -ENODEV; }
-
-static inline bool qcom_scm_restore_sec_cfg_available(void) { return false; }
-static inline int qcom_scm_restore_sec_cfg(u32 device_id, u32 spare)
-		{ return -ENODEV; }
-static inline int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size)
-		{ return -ENODEV; }
-static inline int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare)
-		{ return -ENODEV; }
-extern inline int qcom_scm_mem_protect_video_var(u32 cp_start, u32 cp_size,
-						 u32 cp_nonpixel_start,
-						 u32 cp_nonpixel_size)
-		{ return -ENODEV; }
-static inline int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
-		unsigned int *src, const struct qcom_scm_vmperm *newvm,
-		unsigned int dest_cnt) { return -ENODEV; }
-
-static inline bool qcom_scm_ocmem_lock_available(void) { return false; }
-static inline int qcom_scm_ocmem_lock(enum qcom_scm_ocmem_client id, u32 offset,
-		u32 size, u32 mode) { return -ENODEV; }
-static inline int qcom_scm_ocmem_unlock(enum qcom_scm_ocmem_client id,
-		u32 offset, u32 size) { return -ENODEV; }
-
-static inline bool qcom_scm_ice_available(void) { return false; }
-static inline int qcom_scm_ice_invalidate_key(u32 index) { return -ENODEV; }
-static inline int qcom_scm_ice_set_key(u32 index, const u8 *key, u32 key_size,
-				       enum qcom_scm_ice_cipher cipher,
-				       u32 data_unit_size) { return -ENODEV; }
-
-static inline bool qcom_scm_hdcp_available(void) { return false; }
-static inline int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt,
-		u32 *resp) { return -ENODEV; }
-
-static inline int qcom_scm_qsmmu500_wait_safe_toggle(bool en)
-		{ return -ENODEV; }
-
-static inline int qcom_scm_lmh_dcvsh(u32 payload_fn, u32 payload_reg, u32 payload_val,
-				     u64 limit_node, u32 node_id, u64 version)
-		{ return -ENODEV; }
-
-static inline int qcom_scm_lmh_profile_change(u32 profile_id) { return -ENODEV; }
-
-static inline bool qcom_scm_lmh_dcvsh_available(void) { return -ENODEV; }
-#endif
 #endif