[PATCH] [RFC] usb: gadget: avoid unusual inline assembly
From: Arnd Bergmann <arnd@kernel.org>
Date: 2021-09-27 12:38:38
Also in:
linux-usb, lkml, llvm
Subsystem:
pxa2xx/pxa3xx support, the rest, usb subsystem · Maintainers:
Daniel Mack, Haojian Zhuang, Robert Jarzmik, Linus Torvalds, Greg Kroah-Hartman
From: Arnd Bergmann <arnd@arndb.de> clang does not understand the "mrc%?" syntax: drivers/usb/gadget/udc/pxa25x_udc.c:2330:11: error: invalid % escape in inline assembly string I don't understand it either, but removing the %? here gets it to build. This is probably wrong and someone else should do a proper patch. Any suggestions? Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- drivers/usb/gadget/udc/pxa25x_udc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/udc/pxa25x_udc.c b/drivers/usb/gadget/udc/pxa25x_udc.c
index a09ec1d826b2..52cdfd8212d6 100644
--- a/drivers/usb/gadget/udc/pxa25x_udc.c
+++ b/drivers/usb/gadget/udc/pxa25x_udc.c@@ -2325,7 +2325,7 @@ static int pxa25x_udc_probe(struct platform_device *pdev) pr_info("%s: version %s\n", driver_name, DRIVER_VERSION); /* insist on Intel/ARM/XScale */ - asm("mrc%? p15, 0, %0, c0, c0" : "=r" (chiprev)); + asm("mrc p15, 0, %0, c0, c0" : "=r" (chiprev)); if ((chiprev & CP15R0_VENDOR_MASK) != CP15R0_XSCALE_VALUE) { pr_err("%s: not XScale!\n", driver_name); return -ENODEV;
--
2.29.2
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