/* * vdso_test.c: Sample code to test parse_vdso.c on x86 * Copyright (c) 2011-2014 Andy Lutomirski * Subject to the GNU General Public License, version 2 * * You can amuse yourself by compiling with: * gcc -std=gnu99 -nostdlib * -Os -fno-asynchronous-unwind-tables -flto -lgcc_s * vdso_standalone_test_x86.c parse_vdso.c * to generate a small binary. On x86_64, you can omit -lgcc_s * if you want the binary to be completely standalone. */ #include #include #include #include extern void *vdso_sym(const char *version, const char *name); extern void vdso_init_from_sysinfo_ehdr(uintptr_t base); extern void vdso_init_from_auxv(void *auxv); /* We need a libc functions... */ int strcmp(const char *a, const char *b) { /* This implementation is buggy: it never returns -1. */ while (*a || *b) { if (*a != *b) return 1; if (*a == 0 || *b == 0) return 1; a++; b++; } return 0; } /* ...and two syscalls. This is x86-specific. */ static inline long x86_syscall3(long nr, long a0, long a1, long a2) { long ret; #ifdef __x86_64__ asm volatile ("syscall" : "=a" (ret) : "a" (nr), "D" (a0), "S" (a1), "d" (a2) : "cc", "memory", "rcx", "r8", "r9", "r10", "r11" ); #else asm volatile ("int $0x80" : "=a" (ret) : "a" (nr), "b" (a0), "c" (a1), "d" (a2) : "cc", "memory" ); #endif return ret; } static inline long linux_write(int fd, const void *data, size_t len) { return x86_syscall3(__NR_write, fd, (long)data, (long)len); } static inline void linux_exit(int code) { x86_syscall3(__NR_exit, code, 0, 0); } void to_base10(char *lastdig, time_t n) { while (n) { *lastdig = (n % 10) + '0'; n /= 10; lastdig--; } } __attribute__((externally_visible)) void c_main(void **stack) { /* Parse the stack */ long argc = (long)*stack; stack += argc + 2; /* Now we're pointing at the environment. Skip it. */ while(*stack) stack++; stack++; /* Now we're pointing at auxv. Initialize the vDSO parser. */ vdso_init_from_auxv((void *)stack); /* Find gettimeofday. */ typedef long (*gtod_t)(struct timeval *tv, struct timezone *tz); gtod_t gtod = (gtod_t)vdso_sym("LINUX_2.6", "__vdso_gettimeofday"); if (!gtod) linux_exit(1); struct timeval tv; long ret = gtod(&tv, 0); if (ret == 0) { char buf[] = "The time is .000000\n"; to_base10(buf + 31, tv.tv_sec); to_base10(buf + 38, tv.tv_usec); linux_write(1, buf, sizeof(buf) - 1); } else { linux_exit(ret); } linux_exit(0); } /* * This is the real entry point. It passes the initial stack into * the C entry point. */ asm ( ".text\n" ".global _start\n" ".type _start,@function\n" "_start:\n\t" #ifdef __x86_64__ "mov %rsp,%rdi\n\t" "jmp c_main" #else "push %esp\n\t" "call c_main\n\t" "int $3" #endif ); ype='search' size='10' name='q' value=''/>
path: root/drivers/usb/dwc3/dwc3-keystone.c
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authorLinus Torvalds <torvalds@linux-foundation.org>2017-02-01 08:34:13 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-01 08:34:13 -0800
commitc325b3533730016ca5cdaf902d62550b4243fe43 (patch)
tree03d2690d6df1c449b1f8db597d3e574d894e3ddc /drivers/usb/dwc3/dwc3-keystone.c
parenta2ca3d617944417e9dd5f09fc8a4549cda115f4f (diff)
parentcdca06e4e85974d8a3503ab15709dbbaf90d3dd1 (diff)
Merge tag 'pinctrl-v4.10-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij: "Another week, another set of pin control fixes. The subsystem has seen high patch-spot activity recently. The majority of the patches are for Intel, I vaguely think it mostly concern phones, tablets and maybe chromebooks and even laptops with this Intel Atom family chips. Driver fixes only: - one fix to the Berlin driver making the SD card work fully again. - one fix to the Allwinner/sunxi bias function: one premature change needs to be partially reverted. - the remaining four patches are to Intel embedded SoCs: baytrail (three patches) and merrifield (one patch): register access debounce fixes and a missing spinlock" * tag 'pinctrl-v4.10-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: pinctrl: baytrail: Add missing spinlock usage in byt_gpio_irq_handler pinctrl: baytrail: Debounce register is one per community pinctrl: baytrail: Rectify debounce support (part 2) pinctrl: intel: merrifield: Add missed check in mrfld_config_set() pinctrl: sunxi: Don't enforce bias disable (for now) pinctrl: berlin-bg4ct: fix the value for "sd1a" of pin SCRD0_CRD_PRES
Diffstat (limited to 'drivers/usb/dwc3/dwc3-keystone.c')