61ee7007a5
Add a simple mechanism to pass platform data to the SDIO instances of wl12xx. This way there is no confusion over who owns the 'embedded data', typechecking is preserved, and no possibility for the wrong driver to pick up the data. Originally proposed by Russell King. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
28 lines
577 B
C
28 lines
577 B
C
#include <linux/module.h>
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#include <linux/err.h>
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#include <linux/wl12xx.h>
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static const struct wl12xx_platform_data *platform_data;
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int __init wl12xx_set_platform_data(const struct wl12xx_platform_data *data)
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{
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if (platform_data)
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return -EBUSY;
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if (!data)
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return -EINVAL;
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platform_data = kmemdup(data, sizeof(*data), GFP_KERNEL);
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if (!platform_data)
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return -ENOMEM;
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return 0;
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}
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const struct wl12xx_platform_data *wl12xx_get_platform_data(void)
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{
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if (!platform_data)
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return ERR_PTR(-ENODEV);
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return platform_data;
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}
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EXPORT_SYMBOL(wl12xx_get_platform_data);
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