From: Helge Deller <deller@xxxxxx>
Printing the inventory on a serial console can be quite slow and thus may
trigger the hung task detector (CONFIG_DETECT_HUNG_TASK=y) and possibly
reboot the machine. Adding a cond_resched() prevents this.
Signed-off-by: Helge Deller <deller@xxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # v6.0+
---
arch/parisc/kernel/drivers.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/parisc/kernel/drivers.c b/arch/parisc/kernel/drivers.c
index 25f9b9e9d6df..404ea37705ce 100644
--- a/arch/parisc/kernel/drivers.c
+++ b/arch/parisc/kernel/drivers.c
@@ -1004,6 +1004,9 @@ static __init int qemu_print_iodc_data(struct device *lin_dev, void *data)
pr_info("\n");
+ /* Prevent hung task messages when printing on serial console */
+ cond_resched();
+
pr_info("#define HPA_%08lx_DESCRIPTION \"%s\"\n",
hpa, parisc_hardware_description(&dev->id));
--
2.43.0
