[PATCH 4.19 15/25] soc: sunxi: sram: Actually claim SRAM regions

[Greg Kroah-Hartman]

From: Samuel Holland <samuel@xxxxxxxxxxxx>

[ 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>
---
 drivers/soc/sunxi/sunxi_sram.c | 1 +
 1 file changed, 1 insertion(+)

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;
-- 
2.35.1