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| author | Haojie Li <lihaojie@kylinos.cn> | 2026-08-25 18:08:45 +0800 |
|---|---|---|
| committer | Chun-Kuang Hu <chunkuang.hu@kernel.org> | 2026-09-28 23:20:55 +0000 |
| commit | bce7698e2e6565bb765bd0522337f29f5f312624 (patch) | |
| tree | 0b735b7b4a27369cb4d75d9431b3ee59ce7e5bcc /drivers/usb/chipidea/otg.h | |
| download | linux-stable-bce7698e2e6565bb765bd0522337f29f5f312624.tar.gz linux-stable-bce7698e2e6565bb765bd0522337f29f5f312624.zip | |
drm/mediatek: Add missing IS_ERR check for ovl_adaptor platform devicegrafted
platform_device_register_data() can fail and return an ERR_PTR, but the
return value is used without checking, leading to an invalid pointer
being stored in ddp_comp[].dev and passed to component_match_add() and
mtk_ddp_comp_init(), which could result in a kernel crash.
Add an IS_ERR() check to jump to the error handling path on failure.
Fixes: 0d9eee9118b7 ("drm/mediatek: Add drm ovl_adaptor sub driver for MT8195")
Cc: stable@vger.kernel.org
Signed-off-by: Haojie Li <lihaojie@kylinos.cn>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20260825100845.438893-1-lihaojie@kylinos.cn/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Diffstat (limited to 'drivers/usb/chipidea/otg.h')
| -rw-r--r-- | drivers/usb/chipidea/otg.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/otg.h b/drivers/usb/chipidea/otg.h new file mode 100644 index 000000000..87629b81e --- /dev/null +++ b/drivers/usb/chipidea/otg.h @@ -0,0 +1,25 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2013-2014 Freescale Semiconductor, Inc. + * + * Author: Peter Chen + */ + +#ifndef __DRIVERS_USB_CHIPIDEA_OTG_H +#define __DRIVERS_USB_CHIPIDEA_OTG_H + +u32 hw_read_otgsc(struct ci_hdrc *ci, u32 mask); +void hw_write_otgsc(struct ci_hdrc *ci, u32 mask, u32 data); +int ci_hdrc_otg_init(struct ci_hdrc *ci); +void ci_hdrc_otg_destroy(struct ci_hdrc *ci); +enum ci_role ci_otg_role(struct ci_hdrc *ci); +void ci_handle_vbus_change(struct ci_hdrc *ci); +void ci_handle_id_switch(struct ci_hdrc *ci); +static inline void ci_otg_queue_work(struct ci_hdrc *ci) +{ + disable_irq_nosync(ci->irq); + if (queue_work(ci->wq, &ci->work) == false) + enable_irq(ci->irq); +} + +#endif /* __DRIVERS_USB_CHIPIDEA_OTG_H */ |