On 12/14/24 10:12, Uros Bizjak wrote:
struct zynqmp_ipi_pdata __percpu *pdata is not a per-cpu variable,
so it should not be annotated with __percpu annotation.
Remove invalid __percpu annotation to fix several
zynqmp-ipi-mailbox.c:920:15: warning: incorrect type in assignment (different address spaces)
zynqmp-ipi-mailbox.c:920:15: expected struct zynqmp_ipi_pdata [noderef] __percpu *pdata
zynqmp-ipi-mailbox.c:920:15: got void *
zynqmp-ipi-mailbox.c:927:56: warning: incorrect type in argument 3 (different address spaces)
zynqmp-ipi-mailbox.c:927:56: expected unsigned int [usertype] *out_value
zynqmp-ipi-mailbox.c:927:56: got unsigned int [noderef] __percpu *
...
and several
drivers/mailbox/zynqmp-ipi-mailbox.c:924:9: warning: dereference of noderef expression
...
sparse warnings.
There were no changes in the resulting object file.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 6ffb1635341b ("mailbox: zynqmp: handle SGI for shared IPI")
Signed-off-by: Uros Bizjak <ubizjak@xxxxxxxxx>
Cc: Jassi Brar <jassisinghbrar@xxxxxxxxx>
Cc: Michal Simek <michal.simek@xxxxxxx>
Cc: Tanmay Shah <tanmay.shah@xxxxxxx>
---
v2: - Fix typo in commit message
- Add Fixes and Cc: stable.
---
drivers/mailbox/zynqmp-ipi-mailbox.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mailbox/zynqmp-ipi-mailbox.c b/drivers/mailbox/zynqmp-ipi-mailbox.c
index aa5249da59b2..0c143beaafda 100644
--- a/drivers/mailbox/zynqmp-ipi-mailbox.c
+++ b/drivers/mailbox/zynqmp-ipi-mailbox.c
@@ -905,7 +905,7 @@ static int zynqmp_ipi_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *nc, *np = pdev->dev.of_node;
- struct zynqmp_ipi_pdata __percpu *pdata;
+ struct zynqmp_ipi_pdata *pdata;
struct of_phandle_args out_irq;
struct zynqmp_ipi_mbox *mbox;
int num_mboxes, ret = -EINVAL;
Tanmay: Please take a look
I think this patch is correct. Pdata structure is allocated only once not for
every CPU and marking here is not correct. Information from zynqmp_ipi_pdata are
likely fixed and the same for every CPU. Only IRQ handling is done per cpu basis
but that's it.
Reviewed-by: Michal Simek <michal.simek@xxxxxxx>
Thanks,
Michal
