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* [PATCH] remoteproc: qcom: pil-info: Fix shift overflow
@ 2020-07-16  5:48 Bjorn Andersson
  2020-07-17  2:13 ` Nathan Chancellor
  2020-07-18  0:20 ` patchwork-bot+linux-remoteproc
  0 siblings, 2 replies; 3+ messages in thread
From: Bjorn Andersson @ 2020-07-16  5:48 UTC (permalink / raw)
  To: Bjorn Andersson, Ohad Ben-Cohen
  Cc: linux-arm-msm, linux-remoteproc, linux-kernel, Lee Jones,
	Nathan Chancellor

On platforms with 32-bit phys_addr_t the shift to get the upper word of
the base address of the memory region is invalid. Cast the base to 64
bit to resolv this.

Fixes: 549b67da660d ("remoteproc: qcom: Introduce helper to store pil info in IMEM")
Reported-by: Lee Jones <lee.jones@linaro.org>
Reported-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---
 drivers/remoteproc/qcom_pil_info.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/remoteproc/qcom_pil_info.c b/drivers/remoteproc/qcom_pil_info.c
index 0536e3904669..5521c4437ffa 100644
--- a/drivers/remoteproc/qcom_pil_info.c
+++ b/drivers/remoteproc/qcom_pil_info.c
@@ -108,7 +108,7 @@ int qcom_pil_info_store(const char *image, phys_addr_t base, size_t size)
 found_existing:
 	/* Use two writel() as base is only aligned to 4 bytes on odd entries */
 	writel(base, entry + PIL_RELOC_NAME_LEN);
-	writel(base >> 32, entry + PIL_RELOC_NAME_LEN + 4);
+	writel((u64)base >> 32, entry + PIL_RELOC_NAME_LEN + 4);
 	writel(size, entry + PIL_RELOC_NAME_LEN + sizeof(__le64));
 	mutex_unlock(&pil_reloc_lock);
 
-- 
2.26.2


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2020-07-16  5:48 [PATCH] remoteproc: qcom: pil-info: Fix shift overflow Bjorn Andersson
2020-07-17  2:13 ` Nathan Chancellor
2020-07-18  0:20 ` patchwork-bot+linux-remoteproc

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