Revision b4cd08aa1f53c831e67dc5c6bc9f9acff27abcba authored by Wolfram Sang on 16 December 2015, 19:05:18 UTC, committed by Wolfram Sang on 19 December 2015, 11:00:37 UTC
When we also are I2C slave, we need to disable runtime PM because the address detection mechanism needs to be active all the time. However, we can reenable runtime PM once the slave instance was unregistered. So, use pm_runtime_get_sync/put to achieve this, since it has proper refcounting. pm_runtime_allow/forbid is like a global knob controllable from userspace which is unsuitable here. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Cc: stable@kernel.org
1 parent e79e72c
via.h
/* Miscellaneous definitions for VIA chipsets
Currently used only by drivers/parport/parport_pc.c */
/* Values for SuperIO function select configuration register */
#define VIA_FUNCTION_PARPORT_SPP 0x00
#define VIA_FUNCTION_PARPORT_ECP 0x01
#define VIA_FUNCTION_PARPORT_EPP 0x02
#define VIA_FUNCTION_PARPORT_DISABLE 0x03
#define VIA_FUNCTION_PROBE 0xFF /* Special magic value to be used in code, not to be written into chip */
/* Bits for parallel port mode configuration register */
#define VIA_PARPORT_ECPEPP 0X20
#define VIA_PARPORT_BIDIR 0x80
/* VIA configuration registers */
#define VIA_CONFIG_INDEX 0x3F0
#define VIA_CONFIG_DATA 0x3F1
/* Mask for parallel port IRQ bits (in ISA PnP IRQ routing register 1) */
#define VIA_IRQCONTROL_PARALLEL 0xF0
/* Mask for parallel port DMA bits (in ISA PnP DMA routing register) */
#define VIA_DMACONTROL_PARALLEL 0x0C
Computing file changes ...
