diff options
| author | Todd Poynor | 2018-08-10 05:21:04 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2018-08-27 19:43:44 +0200 |
| commit | 717264bab46e774e196574c77aae5f103b9b2f26 (patch) | |
| tree | 6ec29fc2cf358903e00a2d2f5faa637f165b3ad7 /drivers/staging/gasket | |
| parent | staging: gasket: page table: use dma_mapping_error for error detection (diff) | |
| download | kernel-qcow2-linux-717264bab46e774e196574c77aae5f103b9b2f26.tar.gz kernel-qcow2-linux-717264bab46e774e196574c77aae5f103b9b2f26.tar.xz kernel-qcow2-linux-717264bab46e774e196574c77aae5f103b9b2f26.zip | |
staging: gasket: core: switch to relaxed memory-mapped I/O
Use of readl() is deprecated; readl_relaxed() with appropriate memory
barriers is preferred. Switch to relaxed reads and writes for better
performance as well. Memory barriers required for I/O vs. normal
memory access on Apex devices have already been explicitly coded in the
page table routines.
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/gasket')
| -rw-r--r-- | drivers/staging/gasket/gasket_core.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/staging/gasket/gasket_core.h b/drivers/staging/gasket/gasket_core.h index 275fd0b345b6..fd7e75b765a6 100644 --- a/drivers/staging/gasket/gasket_core.h +++ b/drivers/staging/gasket/gasket_core.h @@ -590,25 +590,25 @@ const char *gasket_num_name_lookup(uint num, static inline ulong gasket_dev_read_64(struct gasket_dev *gasket_dev, int bar, ulong location) { - return readq(&gasket_dev->bar_data[bar].virt_base[location]); + return readq_relaxed(&gasket_dev->bar_data[bar].virt_base[location]); } static inline void gasket_dev_write_64(struct gasket_dev *dev, u64 value, int bar, ulong location) { - writeq(value, &dev->bar_data[bar].virt_base[location]); + writeq_relaxed(value, &dev->bar_data[bar].virt_base[location]); } static inline void gasket_dev_write_32(struct gasket_dev *dev, u32 value, int bar, ulong location) { - writel(value, &dev->bar_data[bar].virt_base[location]); + writel_relaxed(value, &dev->bar_data[bar].virt_base[location]); } static inline u32 gasket_dev_read_32(struct gasket_dev *dev, int bar, ulong location) { - return readl(&dev->bar_data[bar].virt_base[location]); + return readl_relaxed(&dev->bar_data[bar].virt_base[location]); } static inline void gasket_read_modify_write_64(struct gasket_dev *dev, int bar, |