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 4.19-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-4.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 4d360806c7caca4eb4b3879a7786228280ef899d 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 b4b0f3480bd3..51148704af49 100644 --- a/drivers/soc/sunxi/sunxi_sram.c +++ b/drivers/soc/sunxi/sunxi_sram.c @@ -264,6 +264,7 @@ 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;