path: root/include/soc
diff options
authorNicolas Saenz Julienne <>2021-01-18 13:32:34 +0100
committerNicolas Saenz Julienne <>2021-03-22 17:59:51 +0100
commit1e7c57355a3bc617fc220234889e49fe722a6305 (patch)
tree7dd59e11b9f2c8790928cb1c5672948d51d5df42 /include/soc
parenta38fd8748464831584a19438cbb3082b5a2dab15 (diff)
firmware: raspberrypi: Keep count of all consumers
When unbinding the firmware device we need to make sure it has no consumers left. Otherwise we'd leave them with a firmware handle pointing at freed memory. Keep a reference count of all consumers and introduce rpi_firmware_put() which will permit automatically decrease the reference count upon unbinding consumer drivers. Suggested-by: Uwe Kleine-K├Ânig <> Signed-off-by: Nicolas Saenz Julienne <> Reviewed-by: Florian Fainelli <> Reviewed-by: Stephen Boyd <> Reviewed-by: Bartosz Golaszewski <>
Diffstat (limited to 'include/soc')
1 files changed, 2 insertions, 0 deletions
diff --git a/include/soc/bcm2835/raspberrypi-firmware.h b/include/soc/bcm2835/raspberrypi-firmware.h
index cc9cdbc66403..fdfef7fe40df 100644
--- a/include/soc/bcm2835/raspberrypi-firmware.h
+++ b/include/soc/bcm2835/raspberrypi-firmware.h
@@ -140,6 +140,7 @@ int rpi_firmware_property(struct rpi_firmware *fw,
u32 tag, void *data, size_t len);
int rpi_firmware_property_list(struct rpi_firmware *fw,
void *data, size_t tag_size);
+void rpi_firmware_put(struct rpi_firmware *fw);
struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node);
static inline int rpi_firmware_property(struct rpi_firmware *fw, u32 tag,
@@ -154,6 +155,7 @@ static inline int rpi_firmware_property_list(struct rpi_firmware *fw,
return -ENOSYS;
+static inline void rpi_firmware_put(struct rpi_firmware *fw) { }
static inline struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node)
return NULL;