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path: root/drivers/mailbox
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Diffstat (limited to 'drivers/mailbox')
-rw-r--r--drivers/mailbox/Kconfig1
-rw-r--r--drivers/mailbox/bcm-pdc-mailbox.c11
2 files changed, 7 insertions, 5 deletions
diff --git a/drivers/mailbox/Kconfig b/drivers/mailbox/Kconfig
index 97c372908e78..7817d40d81e7 100644
--- a/drivers/mailbox/Kconfig
+++ b/drivers/mailbox/Kconfig
@@ -127,6 +127,7 @@ config XGENE_SLIMPRO_MBOX
config BCM_PDC_MBOX
tristate "Broadcom PDC Mailbox"
depends on ARM64 || COMPILE_TEST
+ depends on HAS_DMA
default ARCH_BCM_IPROC
help
Mailbox implementation for the Broadcom PDC ring manager,
diff --git a/drivers/mailbox/bcm-pdc-mailbox.c b/drivers/mailbox/bcm-pdc-mailbox.c
index cbe0c1ee4ba9..c19dd820ea9b 100644
--- a/drivers/mailbox/bcm-pdc-mailbox.c
+++ b/drivers/mailbox/bcm-pdc-mailbox.c
@@ -469,7 +469,7 @@ static const struct file_operations pdc_debugfs_stats = {
* this directory for a SPU.
* @pdcs: PDC state structure
*/
-void pdc_setup_debugfs(struct pdc_state *pdcs)
+static void pdc_setup_debugfs(struct pdc_state *pdcs)
{
char spu_stats_name[16];
@@ -485,7 +485,7 @@ void pdc_setup_debugfs(struct pdc_state *pdcs)
&pdc_debugfs_stats);
}
-void pdc_free_debugfs(void)
+static void pdc_free_debugfs(void)
{
if (debugfs_dir && simple_empty(debugfs_dir)) {
debugfs_remove_recursive(debugfs_dir);
@@ -1191,10 +1191,11 @@ static void pdc_shutdown(struct mbox_chan *chan)
{
struct pdc_state *pdcs = chan->con_priv;
- if (pdcs)
- dev_dbg(&pdcs->pdev->dev,
- "Shutdown mailbox channel for PDC %u", pdcs->pdc_idx);
+ if (!pdcs)
+ return;
+ dev_dbg(&pdcs->pdev->dev,
+ "Shutdown mailbox channel for PDC %u", pdcs->pdc_idx);
pdc_ring_free(pdcs);
}