#include #include #include #include #include "ioexact.h" extern volatile sig_atomic_t sigint; ssize_t read_exact(int fd, void *buf, size_t len, bool mayexit) { ssize_t num = 0, written; while (len > 0 && !sigint) { if ((written = read(fd, buf, len)) < 0) { if (errno == EAGAIN && num > 0) continue; if (mayexit) return -1; else continue; } if (!written) return 0; len -= written; buf += written; num += written; } return num; } ssize_t write_exact(int fd, void *buf, size_t len, bool mayexit) { ssize_t num = 0, written; while (len > 0 && !sigint) { if ((written = write(fd, buf, len)) < 0) { if (errno == EAGAIN && num > 0) continue; if (mayexit) return -1; else continue; } if (!written) return 0; len -= written; buf += written; num += written; } return num; } dden' name='id' value='f12e7d95d12fa4dbe655bd038a6d38526a879deb'/> net-next plumbingsTobias Klauser
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authorThomas Gleixner <tglx@linutronix.de>2017-01-31 19:03:21 +0100
committerThomas Gleixner <tglx@linutronix.de>2017-01-31 20:22:18 +0100
commitaaaec6fc755447a1d056765b11b24d8ff2b81366 (patch)
treea7f4167960ee1df86739905b6ccdeb95465bfe5f /sound/aoa/soundbus/i2sbus/interface.h
parent08d85f3ea99f1eeafc4e8507936190e86a16ee8c (diff)
x86/irq: Make irq activate operations symmetric
The recent commit which prevents double activation of interrupts unearthed interesting code in x86. The code (ab)uses irq_domain_activate_irq() to reconfigure an already activated interrupt. That trips over the prevention code now. Fix it by deactivating the interrupt before activating the new configuration. Fixes: 08d85f3ea99f1 "irqdomain: Avoid activating interrupts more than once" Reported-and-tested-by: Mike Galbraith <efault@gmx.de> Reported-and-tested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701311901580.3457@nanos
Diffstat (limited to 'sound/aoa/soundbus/i2sbus/interface.h')