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310780e825
A new commit in LLVM causes an error on the use of 'long double' when
'-mno-x87' is used, which the kernel does through an alias,
'-mno-80387' (see the LLVM commit below for more details around why it
does this).
drivers/usb/dwc2/hcd_queue.c:1744:25: error: expression requires 'long double' type support, but target 'x86_64-unknown-linux-gnu' does not support it
delay = ktime_set(0, DWC2_RETRY_WAIT_DELAY);
^
drivers/usb/dwc2/hcd_queue.c:62:34: note: expanded from macro 'DWC2_RETRY_WAIT_DELAY'
#define DWC2_RETRY_WAIT_DELAY (1 * 1E6L)
^
1 error generated.
This happens due to the use of a 'long double' literal. The 'E6' part of
'1E6L' causes the literal to be a 'double' then the 'L' suffix promotes
it to 'long double'.
There is no visible reason for a floating point value in this driver, as
the value is only used as a parameter to a function that expects an
integer type. Use NSEC_PER_MSEC, which is the same integer value as
'1E6L', to avoid changing functionality but fix the error.
Link: https://github.com/ClangBuiltLinux/linux/issues/1497
Link:
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|---|---|---|
| .. | ||
| core.c | ||
| core.h | ||
| core_intr.c | ||
| debug.h | ||
| debugfs.c | ||
| drd.c | ||
| gadget.c | ||
| hcd.c | ||
| hcd.h | ||
| hcd_ddma.c | ||
| hcd_intr.c | ||
| hcd_queue.c | ||
| hw.h | ||
| Kconfig | ||
| Makefile | ||
| params.c | ||
| pci.c | ||
| platform.c | ||