This is a note to let you know that I've just added the patch titled
bus: mhi: Add MMIO region length to controller structure
to the 5.10-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:
bus-mhi-add-mmio-region-length-to-controller-structu.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 8c551509b6578b4052e85b65eb397567801c233a
Author: Bhaumik Bhatt <bbhatt@xxxxxxxxxxxxxx>
Date: Mon Aug 2 10:42:50 2021 +0530
bus: mhi: Add MMIO region length to controller structure
[ Upstream commit baa7a08569358d9d16e71ce36f287c39a665d776 ]
Make controller driver specify the MMIO register region length
for range checking of BHI or BHIe space. This can help validate
that offsets are in acceptable memory region or not and avoid any
boot-up issues due to BHI or BHIe memory accesses.
Link: https://lore.kernel.org/r/1620330705-40192-4-git-send-email-bbhatt@xxxxxxxxxxxxxx
Reviewed-by: Jeffrey Hugo <quic_jhugo@xxxxxxxxxxx>
Reviewed-by: Hemant Kumar <hemantk@xxxxxxxxxxxxxx>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
Signed-off-by: Bhaumik Bhatt <bbhatt@xxxxxxxxxxxxxx>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20210802051255.5771-6-manivannan.sadhasivam@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Stable-dep-of: 6a0c637bfee6 ("bus: mhi: host: Range check CHDBOFF and ERDBOFF")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/include/linux/mhi.h b/include/linux/mhi.h
index d4841e5a5f458..5d9f8c6f3d40f 100644
--- a/include/linux/mhi.h
+++ b/include/linux/mhi.h
@@ -303,6 +303,7 @@ struct mhi_controller_config {
* @rddm_size: RAM dump size that host should allocate for debugging purpose
* @sbl_size: SBL image size downloaded through BHIe (optional)
* @seg_len: BHIe vector size (optional)
+ * @reg_len: Length of the MHI MMIO region (required)
* @fbc_image: Points to firmware image buffer
* @rddm_image: Points to RAM dump buffer
* @mhi_chan: Points to the channel configuration table
@@ -383,6 +384,7 @@ struct mhi_controller {
size_t rddm_size;
size_t sbl_size;
size_t seg_len;
+ size_t reg_len;
struct image_info *fbc_image;
struct image_info *rddm_image;
struct mhi_chan *mhi_chan;
