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path: root/drivers/firmware/arm_scmi/shmem.c
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Diffstat (limited to 'drivers/firmware/arm_scmi/shmem.c')
-rw-r--r--drivers/firmware/arm_scmi/shmem.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/firmware/arm_scmi/shmem.c b/drivers/firmware/arm_scmi/shmem.c
index 87b4f4d35f0623..8bf495bcad09b7 100644
--- a/drivers/firmware/arm_scmi/shmem.c
+++ b/drivers/firmware/arm_scmi/shmem.c
@@ -10,7 +10,7 @@
#include <linux/processor.h>
#include <linux/types.h>
-#include <asm-generic/bug.h>
+#include <linux/bug.h>
#include "common.h"
@@ -122,3 +122,9 @@ bool shmem_poll_done(struct scmi_shared_mem __iomem *shmem,
(SCMI_SHMEM_CHAN_STAT_CHANNEL_ERROR |
SCMI_SHMEM_CHAN_STAT_CHANNEL_FREE);
}
+
+bool shmem_channel_free(struct scmi_shared_mem __iomem *shmem)
+{
+ return (ioread32(&shmem->channel_status) &
+ SCMI_SHMEM_CHAN_STAT_CHANNEL_FREE);
+}