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firmware: Factor out the paged buffer handling code

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This is merely a preparation for the upcoming compressed firmware
support and no functional changes.  It moves the code to handle the
paged buffer allocation and mapping out of fallback.c into the main
code, so that they can be used commonly.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Takashi Iwai
2019-06-11 14:26:24 +02:00
committed by Greg Kroah-Hartman
parent 3aa6980139
commit 5342e7093f
3 changed files with 63 additions and 54 deletions
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4
drivers/base/firmware_loader/firmware.h
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@@ -135,8 +135,12 @@ int assign_fw(struct firmware *fw, struct device *device,
#ifdef CONFIG_FW_LOADER_USER_HELPER
void fw_free_paged_buf(struct fw_priv *fw_priv);
int fw_grow_paged_buf(struct fw_priv *fw_priv, int pages_needed);
int fw_map_paged_buf(struct fw_priv *fw_priv);
#else
static inline void fw_free_paged_buf(struct fw_priv *fw_priv) {}
int fw_grow_paged_buf(struct fw_priv *fw_priv, int pages_needed) { return -ENXIO; }
int fw_map_paged_buf(struct fw_priv *fw_priv) { return -ENXIO; }
#endif
#endif /* __FIRMWARE_LOADER_H */