linux-kernel - [RFC 04/17] firmware: qcom_scm: Remove unused qcom_scm_get

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Message-Id: <1572378065-4490-5-git-send-email-eberman@codeaurora.org>
Date:   Tue, 29 Oct 2019 12:40:52 -0700
From:   Elliot Berman <eberman@...eaurora.org>
To:     bjorn.andersson@...aro.org, saipraka@...eaurora.org,
        agross@...nel.org
Cc:     tsoni@...eaurora.org, sidgup@...eaurora.org,
        psodagud@...eaurora.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Elliot Berman <eberman@...eaurora.org>
Subject: [RFC 04/17] firmware: qcom_scm: Remove unused qcom_scm_get_version

Remove unused qcom_scm_get_version.

Signed-off-by: Elliot Berman <eberman@...eaurora.org>
---
 drivers/firmware/qcom_scm-32.c | 36 ------------------------------------
 include/linux/qcom_scm.h       |  2 --
 2 files changed, 38 deletions(-)

diff --git a/drivers/firmware/qcom_scm-32.c b/drivers/firmware/qcom_scm-32.c
index 240adfd..b2805de 100644
--- a/drivers/firmware/qcom_scm-32.c
+++ b/drivers/firmware/qcom_scm-32.c
@@ -291,42 +291,6 @@ static s32 qcom_scm_call_atomic2(u32 svc, u32 cmd, u32 arg1, u32 arg2)
 	return r0;
 }
 
-u32 qcom_scm_get_version(void)
-{
-	int context_id;
-	static u32 version = -1;
-	register u32 r0 asm("r0");
-	register u32 r1 asm("r1");
-
-	if (version != -1)
-		return version;
-
-	mutex_lock(&qcom_scm_lock);
-
-	r0 = 0x1 << 8;
-	r1 = (u32)&context_id;
-	do {
-		asm volatile(
-			__asmeq("%0", "r0")
-			__asmeq("%1", "r1")
-			__asmeq("%2", "r0")
-			__asmeq("%3", "r1")
-#ifdef REQUIRES_SEC
-			".arch_extension sec\n"
-#endif
-			"smc	#0	@ switch to secure world\n"
-			: "=r" (r0), "=r" (r1)
-			: "r" (r0), "r" (r1)
-			: "r2", "r3", "r12");
-	} while (r0 == QCOM_SCM_INTERRUPTED);
-
-	version = r1;
-	mutex_unlock(&qcom_scm_lock);
-
-	return version;
-}
-EXPORT_SYMBOL(qcom_scm_get_version);
-
 /**
  * qcom_scm_set_cold_boot_addr() - Set the cold boot address for cpus
  * @entry: Entry point function for the cpus
diff --git a/include/linux/qcom_scm.h b/include/linux/qcom_scm.h
index a4dfab0..1e95080 100644
--- a/include/linux/qcom_scm.h
+++ b/include/linux/qcom_scm.h
@@ -59,7 +59,6 @@ extern bool qcom_scm_hdcp_available(void);
 extern int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt,
 			     u32 *resp);
 extern int qcom_scm_qsmmu500_wait_safe_toggle(bool en);
-extern u32 qcom_scm_get_version(void);
 extern bool qcom_scm_is_available(void);
 #else
 
@@ -101,7 +100,6 @@ 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 u32 qcom_scm_get_version(void) { return 0; }
 static inline bool qcom_scm_is_available(void) { return false; }
 #endif
 #endif
-- 
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