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soc: sunxi: sram: Prevent the driver from being unbound

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[ Upstream commit 90e10a1fcd ]

This driver exports a regmap tied to the platform device (as opposed to
a syscon, which exports a regmap tied to the OF node). Because of this,
the driver can never be unbound, as that would destroy the regmap. Use
builtin_platform_driver_probe() to enforce this limitation.

Fixes: 5828729beb ("soc: sunxi: export a regmap for EMAC clock reg on A64")
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/20220815041248.53268-5-samuel@sholland.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Samuel Holland 2022-08-14 23:12:41 -05:00 • committed by Greg Kroah-Hartman
commit 0fdc3ab9b4
1 changed files with 2 additions and 3 deletions
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5
drivers/soc/sunxi/sunxi_sram.c
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@ -319,7 +319,7 @@ static struct regmap_config sunxi_sram_emac_clock_regmap = {
.writeable_reg = sunxi_sram_regmap_accessible_reg,
};
static int sunxi_sram_probe(struct platform_device *pdev)
static int __init sunxi_sram_probe(struct platform_device *pdev)
{
struct resource *res;
struct dentry *d;
@ -397,9 +397,8 @@ static struct platform_driver sunxi_sram_driver = {
.name = "sunxi-sram",
.of_match_table = sunxi_sram_dt_match,
},
.probe = sunxi_sram_probe,
};
module_platform_driver(sunxi_sram_driver);
builtin_platform_driver_probe(sunxi_sram_driver, sunxi_sram_probe);
MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
MODULE_DESCRIPTION("Allwinner sunXi SRAM Controller Driver");