On Fri, Jul 16, 2021 at 02:20:33PM +0200, Pali Rohár wrote: > From: Remi Pommarel <repk@xxxxxxxxxxxx> > > commit 7fbcb5da811be7d47468417c7795405058abb3da upstream. > > advk_pcie_wait_pio() can be called while holding a spinlock (from > pci_bus_read_config_dword()), then depends on jiffies in order to > timeout while polling on PIO state registers. In the case the PIO > transaction failed, the timeout will never happen and will also cause > the cpu to stall. > > This decrements a variable and wait instead of using jiffies. > > Signed-off-by: Remi Pommarel <repk@xxxxxxxxxxxx> > Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx> > Reviewed-by: Andrew Murray <andrew.murray@xxxxxxx> > Acked-by: Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxx> > --- > This is backport to 4.14 kernel. Backport of upstream commit can be done > automatically by git cherry-pick command if merge.renamelimit variable is > set to at least 12711. > --- > drivers/pci/host/pci-aardvark.c | 10 +++++----- > 1 file changed, 5 insertions(+), 5 deletions(-) Also queued up to 4.19, thanks. greg k-h
