The patch works for Fintek F81504/F81508/F81512 PCI to Serial Port IC. Serial port of this IC will failed after wakeup from S3(STR).
It's due to this PCI device's configuration space from 0x40 to 0x40 + max_port * 0x08 should be re-configured when the system wakeup from S3(STR). If had no re-configure after S3, It's will all zero. It's will make uart function disabled. We move all initialization from pci_fintek_setup() to pci_fintek_init() and set it to pci_serial_quirks struct .init section. It's will re-init this device when system wakeup from pciserial_resume_ports(). V3 changelog 1. due to cleanup code patch is applied, this patch is following branch tty_testing fbf47635315ab308c9b58a1ea0906e711a9228de. V2 changelog (old) 1. swap pci_fintek_setup() / pci_fintek_init() location in source code to make diff more readable V1 changelog (old) 1. Initial version, including 2 patches, one is cleanup code, another is fix S3 bug. Peter Hung (1): serial: 8250_pci: port failed after wakeup from S3 drivers/tty/serial/8250/8250_pci.c | 114 ++++++++++++++++--------------------- 1 file changed, 50 insertions(+), 64 deletions(-) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
