This is a note to let you know that I've just added the patch titled soc: qcom: mdt_loader: Drop PT_LOAD check on hash segment to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: soc-qcom-mdt_loader-drop-pt_load-check-on-hash-segme.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit a855318bc107f3af0394c5af6c33e847ad81f344 Author: Shawn Guo <shawn.guo@xxxxxxxxxx> Date: Sat Aug 28 15:02:02 2021 +0800 soc: qcom: mdt_loader: Drop PT_LOAD check on hash segment [ Upstream commit 833d51d7c66d6708abbc02398892b96b950167b9 ] PT_LOAD type denotes that the segment should be loaded into the final firmware memory region. Hash segment is not one such, because it's only needed for PAS init and shouldn't be in the final firmware memory region. That's why mdt_phdr_valid() explicitly reject non PT_LOAD segment and hash segment. This actually makes the hash segment type check in qcom_mdt_read_metadata() unnecessary and redundant. For a hash segment, it won't be loaded into firmware memory region anyway, due to the QCOM_MDT_TYPE_HASH check in mdt_phdr_valid(), even if it has a PT_LOAD type for some reason (misusing or abusing?). Some firmware files on Sony phones are such examples, e.g WCNSS firmware of Sony Xperia M4 Aqua phone. The type of hash segment is just PT_LOAD. Drop the unnecessary hash segment type check in qcom_mdt_read_metadata() to fix firmware loading failure on these phones, while hash segment is still kept away from the final firmware memory region. Fixes: 498b98e93900 ("soc: qcom: mdt_loader: Support loading non-split images") Signed-off-by: Shawn Guo <shawn.guo@xxxxxxxxxx> Reviewed-by: Marijn Suijten <marijn.suijten@xxxxxxxxxxxxxx> Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx> Link: https://lore.kernel.org/r/20210828070202.7033-1-shawn.guo@xxxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/soc/qcom/mdt_loader.c b/drivers/soc/qcom/mdt_loader.c index eba7f76f9d61..6034cd8992b0 100644 --- a/drivers/soc/qcom/mdt_loader.c +++ b/drivers/soc/qcom/mdt_loader.c @@ -98,7 +98,7 @@ void *qcom_mdt_read_metadata(const struct firmware *fw, size_t *data_len) if (ehdr->e_phnum < 2) return ERR_PTR(-EINVAL); - if (phdrs[0].p_type == PT_LOAD || phdrs[1].p_type == PT_LOAD) + if (phdrs[0].p_type == PT_LOAD) return ERR_PTR(-EINVAL); if ((phdrs[1].p_flags & QCOM_MDT_TYPE_MASK) != QCOM_MDT_TYPE_HASH)