Patch "soc: sunxi: sram: Actually claim SRAM regions" has been added to the 5.10-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    soc: sunxi: sram: Actually claim SRAM regions

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:
     soc-sunxi-sram-actually-claim-sram-regions.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 164e288bb000cca2ea721e608f63bc4587bdebb5
Author: Samuel Holland <samuel@xxxxxxxxxxxx>
Date:   Sun Aug 14 23:12:40 2022 -0500

    soc: sunxi: sram: Actually claim SRAM regions
    
    [ Upstream commit fd362baad2e659ef0fb5652f023a606b248f1781 ]
    
    sunxi_sram_claim() checks the sram_desc->claimed flag before updating
    the register, with the intent that only one device can claim a region.
    However, this was ineffective because the flag was never set.
    
    Fixes: 4af34b572a85 ("drivers: soc: sunxi: Introduce SoC driver to map SRAMs")
    Reviewed-by: Jernej Skrabec <jernej.skrabec@xxxxxxxxx>
    Signed-off-by: Samuel Holland <samuel@xxxxxxxxxxxx>
    Reviewed-by: Heiko Stuebner <heiko@xxxxxxxxx>
    Tested-by: Heiko Stuebner <heiko@xxxxxxxxx>
    Signed-off-by: Jernej Skrabec <jernej.skrabec@xxxxxxxxx>
    Link: https://lore.kernel.org/r/20220815041248.53268-4-samuel@xxxxxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/soc/sunxi/sunxi_sram.c b/drivers/soc/sunxi/sunxi_sram.c
index d4c7bd59429e..5d1305483542 100644
--- a/drivers/soc/sunxi/sunxi_sram.c
+++ b/drivers/soc/sunxi/sunxi_sram.c
@@ -254,6 +254,7 @@ int sunxi_sram_claim(struct device *dev)
 	writel(val | ((device << sram_data->offset) & mask),
 	       base + sram_data->reg);
 
+	sram_desc->claimed = true;
 	spin_unlock(&sram_lock);
 
 	return 0;