/* * POWER Data Stream Control Register (DSCR) default test * * This test modifies the system wide default DSCR through * it's sysfs interface and then verifies that all threads * see the correct changed DSCR value immediately. * * Copyright 2012, Anton Blanchard, IBM Corporation. * Copyright 2015, Anshuman Khandual, IBM Corporation. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published * by the Free Software Foundation. */ #include "dscr.h" static unsigned long dscr; /* System DSCR default */ static unsigned long sequence; static unsigned long result[THREADS]; static void *do_test(void *in) { unsigned long thread = (unsigned long)in; unsigned long i; for (i = 0; i < COUNT; i++) { unsigned long d, cur_dscr, cur_dscr_usr; unsigned long s1, s2; s1 = ACCESS_ONCE(sequence); if (s1 & 1) continue; rmb(); d = dscr; cur_dscr = get_dscr(); cur_dscr_usr = get_dscr_usr(); rmb(); s2 = sequence; if (s1 != s2) continue; if (cur_dscr != d) { fprintf(stderr, "thread %ld kernel DSCR should be %ld " "but is %ld\n", thread, d, cur_dscr); result[thread] = 1; pthread_exit(&result[thread]); } if (cur_dscr_usr != d) { fprintf(stderr, "thread %ld user DSCR should be %ld " "but is %ld\n", thread, d, cur_dscr_usr); result[thread] = 1; pthread_exit(&result[thread]); } } result[thread] = 0; pthread_exit(&result[thread]); } int dscr_default(void) { pthread_t threads[THREADS]; unsigned long i, *status[THREADS]; unsigned long orig_dscr_default; orig_dscr_default = get_default_dscr(); /* Initial DSCR default */ dscr = 1; set_default_dscr(dscr); /* Spawn all testing threads */ for (i = 0; i < THREADS; i++) { if (pthread_create(&threads[i], NULL, do_test, (void *)i)) { perror("pthread_create() failed"); goto fail; } } srand(getpid()); /* Keep changing the DSCR default */ for (i = 0; i < COUNT; i++) { double ret = uniform_deviate(rand()); if (ret < 0.0001) { sequence++; wmb(); dscr++; if (dscr > DSCR_MAX) dscr = 0; set_default_dscr(dscr); wmb(); sequence++; } } /* Individual testing thread exit status */ for (i = 0; i < THREADS; i++) { if (pthread_join(threads[i], (void **)&(status[i]))) { perror("pthread_join() failed"); goto fail; } if (*status[i]) { printf("%ldth thread failed to join with %ld status\n", i, *status[i]); goto fail; } } set_default_dscr(orig_dscr_default); return 0; fail: set_default_dscr(orig_dscr_default); return 1; } int main(int argc, char *argv[]) { return test_harness(dscr_default, "dscr_default_test"); } 5ec'>root/sound/usb/usx2y/us122l.c
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authorRoger Shimizu <rogershimizu@gmail.com>2017-01-30 20:07:29 +0900
committerGregory CLEMENT <gregory.clement@free-electrons.com>2017-01-31 12:19:32 +0100
commit81917bad86a66f2bdcb12b4c10ab1bf333ed25ec (patch)
tree3d56cb771fc5f0a37412e62f99aacc6d21a646c0 /sound/usb/usx2y/us122l.c
parent0c744ea4f77d72b3dcebb7a8f2684633ec79be88 (diff)
ARM: dts: orion5x-lschl: Fix model name
Model name should be consistent with legacy device file, so that user can migrate their system from legacy device support to device-tree safely. Legacy device file is currently removed, but it can be found on 4.8 or previous version of linux: arch/arm/mach-orion5x/ls-chl-setup.c Fixes: f94f268979a2 ("ARM: dts: orion5x: convert ls-chl to FDT") Cc: Ashley Hughes <ashley.hughes@blueyonder.co.uk> Signed-off-by: Roger Shimizu <rogershimizu@gmail.com> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Diffstat (limited to 'sound/usb/usx2y/us122l.c')