From 530ddf8563df4d7af8f8bdd99fa478c63805d0e3 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Wed, 24 Dec 2008 16:23:37 +0100 Subject: [PATCH] Staging: meilhaus: Correct use of ! and & ME_IO_SINGLE_TYPE_WRITE_NONBLOCKING and ME_IO_STREAM_CONFIG_WRAPAROUND both hanve 0 as the rightmost bit, and thus eg !flags & ME_IO_SINGLE_TYPE_WRITE_NONBLOCKING is always 0. I assume that !(flags & ME_IO_SINGLE_TYPE_WRITE_NONBLOCKING) and !(flags & ME_IO_STREAM_CONFIG_WRAPAROUND) were intended. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // @@ expression E; constant C; @@ ( !E & !C | - !E & C + !(E & C) ) // Signed-off-by: Julia Lawall Signed-off-by: Greg Kroah-Hartman --- drivers/staging/meilhaus/me1600_ao.c | 4 +++- drivers/staging/meilhaus/me4600_ao.c | 2 +- drivers/staging/meilhaus/me6000_ao.c | 2 +- 3 files changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/staging/meilhaus/me1600_ao.c b/drivers/staging/meilhaus/me1600_ao.c index d127c6b00307..52b3b03d7644 100644 --- a/drivers/staging/meilhaus/me1600_ao.c +++ b/drivers/staging/meilhaus/me1600_ao.c @@ -756,7 +756,9 @@ static int me1600_ao_io_single_write(me_subdevice_t * subdevice, queue_delayed_work(instance->me1600_workqueue, &instance->ao_control_task, 1); - if ((!flags & ME_IO_SINGLE_TYPE_WRITE_NONBLOCKING) && ((instance->ao_regs_shadows)->trigger & instance->ao_idx)) { //Blocking mode. Wait for software trigger. + if ((!(flags & ME_IO_SINGLE_TYPE_WRITE_NONBLOCKING)) && + ((instance->ao_regs_shadows)->trigger & instance->ao_idx)) { + /* Blocking mode. Wait for software trigger. */ if (time_out) { delay = (time_out * HZ) / 1000; if (delay == 0) diff --git a/drivers/staging/meilhaus/me4600_ao.c b/drivers/staging/meilhaus/me4600_ao.c index e2bec8229abd..2571caf7530c 100644 --- a/drivers/staging/meilhaus/me4600_ao.c +++ b/drivers/staging/meilhaus/me4600_ao.c @@ -1025,7 +1025,7 @@ static int me4600_ao_io_stream_config(me_subdevice_t * subdevice, } if (flags & ME_IO_STREAM_CONFIG_HARDWARE_ONLY) { - if (!flags & ME_IO_STREAM_CONFIG_WRAPAROUND) { + if (!(flags & ME_IO_STREAM_CONFIG_WRAPAROUND)) { PERROR ("Hardware ME_IO_STREAM_CONFIG_HARDWARE_ONLY has to be with ME_IO_STREAM_CONFIG_WRAPAROUND.\n"); return ME_ERRNO_INVALID_FLAGS; diff --git a/drivers/staging/meilhaus/me6000_ao.c b/drivers/staging/meilhaus/me6000_ao.c index 94f01231f79a..e1c94cb71677 100644 --- a/drivers/staging/meilhaus/me6000_ao.c +++ b/drivers/staging/meilhaus/me6000_ao.c @@ -1063,7 +1063,7 @@ static int me6000_ao_io_stream_config(me_subdevice_t * subdevice, } if (flags & ME_IO_STREAM_CONFIG_HARDWARE_ONLY) { - if (!flags & ME_IO_STREAM_CONFIG_WRAPAROUND) { + if (!(flags & ME_IO_STREAM_CONFIG_WRAPAROUND)) { PERROR ("Hardware ME_IO_STREAM_CONFIG_HARDWARE_ONLY has to be with ME_IO_STREAM_CONFIG_WRAPAROUND.\n"); return ME_ERRNO_INVALID_FLAGS; -- 2.20.1