Commit d25e4b03 authored Aug 14, 2022 by Samuel Holland Committed by Greg Kroah-Hartman Oct 05, 2022

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: 4af34b57 ("drivers: soc: sunxi: Introduce SoC driver to map SRAMs")
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20220815041248.53268-4-samuel@sholland.org


Signed-off-by: Sasha Levin <sashal@kernel.org>

parent f039564c

drivers/soc/sunxi/sunxi_sram.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -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;