From 04a512fea333369cc0b550f3b90df0d638e34d00 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Tue, 10 Apr 2018 17:25:39 -0500 Subject: [PATCH] soc: qcom: smem: byte swap values properly Two places report an error when a partition header is found to not contain the right canary value. The error messages do not properly byte swap the host ids. Fix this, and adjust the format specificier to match the 16-bit unsigned data type. Move the error handling for a bad canary value to the end of qcom_smem_alloc_private(). This avoids some long lines, and reduces the distraction of handling this unexpected problem. Signed-off-by: Alex Elder Reviewed-by: Bjorn Andersson Signed-off-by: Andy Gross --- drivers/soc/qcom/smem.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/drivers/soc/qcom/smem.c b/drivers/soc/qcom/smem.c index 3102aa94aec2..82f0908b90e1 100644 --- a/drivers/soc/qcom/smem.c +++ b/drivers/soc/qcom/smem.c @@ -365,13 +365,8 @@ static int qcom_smem_alloc_private(struct qcom_smem *smem, cached = phdr_to_last_cached_entry(phdr); while (hdr < end) { - if (hdr->canary != SMEM_PRIVATE_CANARY) { - dev_err(smem->dev, - "Found invalid canary in hosts %d:%d partition\n", - phdr->host0, phdr->host1); - return -EINVAL; - } - + if (hdr->canary != SMEM_PRIVATE_CANARY) + goto bad_canary; if (le16_to_cpu(hdr->item) == item) return -EEXIST; @@ -400,6 +395,11 @@ static int qcom_smem_alloc_private(struct qcom_smem *smem, le32_add_cpu(&phdr->offset_free_uncached, alloc_size); return 0; +bad_canary: + dev_err(smem->dev, "Found invalid canary in hosts %hu:%hu partition\n", + le16_to_cpu(phdr->host0), le16_to_cpu(phdr->host1)); + + return -EINVAL; } static int qcom_smem_alloc_global(struct qcom_smem *smem, @@ -563,8 +563,8 @@ static void *qcom_smem_get_private(struct qcom_smem *smem, return ERR_PTR(-ENOENT); invalid_canary: - dev_err(smem->dev, "Found invalid canary in hosts %d:%d partition\n", - phdr->host0, phdr->host1); + dev_err(smem->dev, "Found invalid canary in hosts %hu:%hu partition\n", + le16_to_cpu(phdr->host0), le16_to_cpu(phdr->host1)); return ERR_PTR(-EINVAL); } -- 2.11.0