#define _GNU_SOURCE #include #include #include #include #include #include #include #include #include "die.h" #include "dev.h" #include "ioops.h" #include "str.h" #include "built_in.h" int open_or_die(const char *file, int flags) { int ret = open(file, flags); if (unlikely(ret < 0)) panic("Cannot open file %s! %s.\n", file, strerror(errno)); return ret; } int open_or_die_m(const char *file, int flags, mode_t mode) { int ret = open(file, flags, mode); if (unlikely(ret < 0)) panic("Cannot open or create file %s! %s.", file, strerror(errno)); return ret; } int dup_or_die(int oldfd) { int newfd = dup(oldfd); if (unlikely(newfd < 0)) panic("Cannot dup old file descriptor!\n"); return newfd; } void dup2_or_die(int oldfd, int newfd) { int ret = dup2(oldfd, newfd); if (unlikely(ret < 0)) panic("Cannot dup2 old/new file descriptor!\n"); } void create_or_die(const char *file, mode_t mode) { int fd = open_or_die_m(file, O_WRONLY | O_CREAT, mode); close(fd); } void pipe_or_die(int pipefd[2], int flags) { int ret = pipe2(pipefd, flags); if (unlikely(ret < 0)) panic("Cannot create pipe2 event fd! %s.\n", strerror(errno)); } int tun_open_or_die(const char *name, int type) { int fd, ret; short flags; struct ifreq ifr; if (unlikely(!name)) panic("No name provided for tundev!\n"); fd = open_or_die("/dev/net/tun", O_RDWR); memset(&ifr, 0, sizeof(ifr)); ifr.ifr_flags = type; strlcpy(ifr.ifr_name, name, IFNAMSIZ); ret = ioctl(fd, TUNSETIFF, &ifr); if (unlikely(ret < 0)) panic("ioctl screwed up! %s.\n", strerror(errno)); ret = fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK); if (unlikely(ret < 0)) panic("fctnl screwed up! %s.\n", strerror(errno)); flags = device_get_flags(name); flags |= IFF_UP | IFF_RUNNING; device_set_flags(name, flags); return fd; } ssize_t read_or_die(int fd, void *buf, size_t len) { ssize_t ret = read(fd, buf, len); if (unlikely(ret < 0)) { if (errno == EPIPE) die(); panic("Cannot read from descriptor! %s.\n", strerror(errno)); } return ret; } ssize_t write_or_die(int fd, const void *buf, size_t len) { ssize_t ret = write(fd, buf, len); if (unlikely(ret < 0)) { if (errno == EPIPE) die(); panic("Cannot write to descriptor! %s.", strerror(errno)); } return ret; } int read_blob_or_die(const char *file, void *blob, size_t count) { int fd, ret; fd = open_or_die(file, O_RDONLY); ret = read_or_die(fd, blob, count); close(fd); return ret; } int write_blob_or_die(const char *file, const void *blob, size_t count) { int fd, ret; fd = open_or_die_m(file, O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR); ret = write_or_die(fd, blob, count); fdatasync(fd); close(fd); return ret; } xt.git/commit/Documentation?id=d3c35337fb01ed41c3aadfe73fe317b5b0741897'>Documentation/frv
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authorDave Airlie <airlied@redhat.com>2016-07-16 11:19:29 +1000
committerDave Airlie <airlied@redhat.com>2016-07-16 11:19:29 +1000
commitd3c35337fb01ed41c3aadfe73fe317b5b0741897 (patch)
tree7ef0fd006210a99cff39fecb55e9acbd31ca31e0 /Documentation/frv
parentf82c13722275b6aca3a956a82846465ec789b367 (diff)
parentf140b0cc776f8771adfa45d2ef234da72662443d (diff)
Merge tag 'imx-drm-next-2016-07-14' of git://git.pengutronix.de/git/pza/linux into drm-next
imx-drm updates - atomic mode setting conversion - replace DMFC FIFO allocation mechanism with a fixed allocation that is good enough for all cases - support for external bridges connected to parallel-display - improved error handling in imx-ldb, imx-tve, and parallel-display - some code cleanup in imx-tve * tag 'imx-drm-next-2016-07-14' of git://git.pengutronix.de/git/pza/linux: drm/imx: parallel-display: add bridge support drm/imx: parallel-display: check return code from of_get_drm_display_mode() gpu: ipu-v3: ipu-dc: don't bug out on invalid bus_format drm/imx: imx-tve: fix the error message drm/imx: imx-tve: remove unneeded 'or' operation drm/imx: imx-tve: check the value returned by regulator_set_voltage() drm/imx: imx-ldb: check return code on panel attach drm/imx: turn remaining container_of macros into inline functions drm/imx: store internal bus configuration in crtc state drm/imx: remove empty mode_set encoder callbacks drm/imx: atomic phase 3 step 3: Advertise DRIVER_ATOMIC drm/imx: atomic phase 3 step 2: Legacy callback fixups drm/bridge: dw-hdmi: Remove the legacy drm_connector_funcs structure drm/imx: atomic phase 3 step 1: Use atomic configuration drm/imx: Remove encoders' ->prepare callbacks drm/imx: atomic phase 2 step 2: Track plane_state->fb correctly in ->page_flip drm/imx: atomic phase 2 step 1: Wire up state ->reset, ->duplicate and ->destroy drm/imx: atomic phase 1: Use transitional atomic CRTC and plane helpers gpu: ipu-v3: ipu-dmfc: Use static DMFC FIFO allocation mechanism drm/imx: ipuv3 plane: Check different types of plane separately
Diffstat (limited to 'Documentation/frv')