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backlight: panasonic-laptop - Fix incomplete registration failure handling 

Properly return backlight registration error to parent.
Mark struct backlight_ops as const.

Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Acked-by: Harald Welte <laforge@gnumonks.org> (registration failure)
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
This commit is contained in:
Bruno Prémont 2010-02-26 13:20:10 +01:00 committed by Richard Purdie
parent 28d85873cd
commit ec57af9c2e
1 changed files with 4 additions and 2 deletions
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6
drivers/platform/x86/panasonic-laptop.c
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@ -352,7 +352,7 @@ static int bl_set_status(struct backlight_device *bd)
return acpi_pcc_write_sset(pcc, SINF_DC_CUR_BRIGHT, bright); return acpi_pcc_write_sset(pcc, SINF_DC_CUR_BRIGHT, bright);
} }
static struct backlight_ops pcc_backlight_ops = { static const struct backlight_ops pcc_backlight_ops = {
.get_brightness = bl_get, .get_brightness = bl_get,
.update_status = bl_set_status, .update_status = bl_set_status,
}; };
@ -651,8 +651,10 @@ static int acpi_pcc_hotkey_add(struct acpi_device *device)
props.max_brightness = pcc->sinf[SINF_AC_MAX_BRIGHT]; props.max_brightness = pcc->sinf[SINF_AC_MAX_BRIGHT];
pcc->backlight = backlight_device_register("panasonic", NULL, pcc, pcc->backlight = backlight_device_register("panasonic", NULL, pcc,
&pcc_backlight_ops, &props); &pcc_backlight_ops, &props);
if (IS_ERR(pcc->backlight)) if (IS_ERR(pcc->backlight)) {
result = PTR_ERR(pcc->backlight);
goto out_sinf; goto out_sinf;
}
/* read the initial brightness setting from the hardware */ /* read the initial brightness setting from the hardware */
pcc->backlight->props.brightness = pcc->sinf[SINF_AC_CUR_BRIGHT]; pcc->backlight->props.brightness = pcc->sinf[SINF_AC_CUR_BRIGHT];