/* * Copyright 2015, Michael Neuling, IBM Corp. * Licensed under GPLv2. * * Original: Michael Neuling 3/4/2014 * Modified: Rashmica Gupta 8/12/2015 * * Check if any of the Transaction Memory SPRs get corrupted. * - TFIAR - stores address of location of transaction failure * - TFHAR - stores address of software failure handler (if transaction * fails) * - TEXASR - lots of info about the transacion(s) * * (1) create more threads than cpus * (2) in each thread: * (a) set TFIAR and TFHAR a unique value * (b) loop for awhile, continually checking to see if * either register has been corrupted. * * (3) Loop: * (a) begin transaction * (b) abort transaction * (c) check TEXASR to see if FS has been corrupted * */ #define _GNU_SOURCE #include #include #include #include #include #include "utils.h" #include "tm.h" int num_loops = 10000; int passed = 1; void tfiar_tfhar(void *in) { int i, cpu; unsigned long tfhar, tfhar_rd, tfiar, tfiar_rd; cpu_set_t cpuset; CPU_ZERO(&cpuset); cpu = (unsigned long)in >> 1; CPU_SET(cpu, &cpuset); sched_setaffinity(0, sizeof(cpuset), &cpuset); /* TFIAR: Last bit has to be high so userspace can read register */ tfiar = ((unsigned long)in) + 1; tfiar += 2; mtspr(SPRN_TFIAR, tfiar); /* TFHAR: Last two bits are reserved */ tfhar = ((unsigned long)in); tfhar &= ~0x3UL; tfhar += 4; mtspr(SPRN_TFHAR, tfhar); for (i = 0; i < num_loops; i++) { tfhar_rd = mfspr(SPRN_TFHAR); tfiar_rd = mfspr(SPRN_TFIAR); if ( (tfhar != tfhar_rd) || (tfiar != tfiar_rd) ) { passed = 0; return; } } return; } void texasr(void *in) { unsigned long i; uint64_t result = 0; for (i = 0; i < num_loops; i++) { asm __volatile__( "tbegin.;" "beq 3f ;" "tabort. 0 ;" "tend.;" /* Abort handler */ "3: ;" ::: "memory"); /* Check the TEXASR */ result = mfspr(SPRN_TEXASR); if ((result & TEXASR_FS) == 0) { passed = 0; return; } } return; } int test_tmspr() { pthread_t thread; int thread_num; unsigned long i; SKIP_IF(!have_htm()); /* To cause some context switching */ thread_num = 10 * sysconf(_SC_NPROCESSORS_ONLN); /* Test TFIAR and TFHAR */ for (i = 0 ; i < thread_num ; i += 2){ if (pthread_create(&thread, NULL, (void*)tfiar_tfhar, (void *)i)) return EXIT_FAILURE; } if (pthread_join(thread, NULL) != 0) return EXIT_FAILURE; /* Test TEXASR */ for (i = 0 ; i < thread_num ; i++){ if (pthread_create(&thread, NULL, (void*)texasr, (void *)i)) return EXIT_FAILURE; } if (pthread_join(thread, NULL) != 0) return EXIT_FAILURE; if (passed) return 0; else return 1; } int main(int argc, char *argv[]) { if (argc > 1) { if (strcmp(argv[1], "-h") == 0) { printf("Syntax:\t []\n"); return 0; } else { num_loops = atoi(argv[1]); } } return test_harness(test_tmspr, "tm_tmspr"); } x/net-next.git/log/tools/testing?id=722c9a0cebb88ac1a982285f15d5fd44f4140c66'>testing/selftests/powerpc/harness.c

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author	Jurij Smakov <jurij@wooyd.org>	2017-01-30 15:41:36 -0600
committer	Kalle Valo <kvalo@codeaurora.org>	2017-01-31 09:05:25 +0200
commit	52f5631a4c056ad01682393be56d2be237e81610 (patch)
tree	53d1ddd2c1b179c808df10b6ce731ad26aa9f31b /kernel/printk
parent	2b1d530cb3157f828fcaadd259613f59db3c6d1c (diff)

rtlwifi: rtl8192ce: Fix loading of incorrect firmware

In commit cf4747d7535a ("rtlwifi: Fix regression caused by commit d86e64768859, an error in the edit results in the wrong firmware being loaded for some models of the RTL8188/8192CE. In this condition, the connection suffered from high ping latency, slow transfer rates, and required higher signal strengths to work at all See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=853073, https://bugzilla.opensuse.org/show_bug.cgi?id=1017471, and https://github.com/lwfinger/rtlwifi_new/issues/203 for descriptions of the problems. This patch fixes all of those problems. Fixes: cf4747d7535a ("rtlwifi: Fix regression caused by commit d86e64768859") Signed-off-by: Jurij Smakov <jurij@wooyd.org> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Cc: Stable <stable@vger.kernel.org> # 4.9+ Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

Diffstat (limited to 'kernel/printk')