From: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
The readq() and writeq() helpers are available in the
asm-generic/io-64-nonatomic-hi-lo.h and asm-generic/io-64-nonatomic-lo-hi.h
headers. Replace custom implementation by the generic helpers.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Signed-off-by: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
---
drivers/usb/host/xhci.h | 14 ++++----------
1 file changed, 4 insertions(+), 10 deletions(-)
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index f24b7d1..be9048e 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -29,6 +29,8 @@
#include <linux/kernel.h>
#include <linux/usb/hcd.h>
+#include <asm-generic/io-64-nonatomic-lo-hi.h>
+
/* Code sharing between pci-quirks and xhci hcd */
#include "xhci-ext-caps.h"
#include "pci-quirks.h"
@@ -1707,20 +1709,12 @@ static inline struct usb_hcd *xhci_to_hcd(struct xhci_hcd *xhci)
static inline u64 xhci_read_64(const struct xhci_hcd *xhci,
__le64 __iomem *regs)
{
- __u32 __iomem *ptr = (__u32 __iomem *) regs;
- u64 val_lo = readl(ptr);
- u64 val_hi = readl(ptr + 1);
- return val_lo + (val_hi << 32);
+ return lo_hi_readq(regs);
}
static inline void xhci_write_64(struct xhci_hcd *xhci,
const u64 val, __le64 __iomem *regs)
{
- __u32 __iomem *ptr = (__u32 __iomem *) regs;
- u32 val_lo = lower_32_bits(val);
- u32 val_hi = upper_32_bits(val);
-
- writel(val_lo, ptr);
- writel(val_hi, ptr + 1);
+ lo_hi_writeq(val, regs);
}
static inline int xhci_link_trb_quirk(struct xhci_hcd *xhci)
--
1.9.1
--
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