X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fs390%2Fs390mach.c;fp=drivers%2Fs390%2Fs390mach.c;h=5399c5d99b81e0b5bc8f56949d4ec937711b6e67;hb=16c70f8c1b54b61c3b951b6fb220df250fe09b32;hp=f99e55308b32df8625658de3f63c1fddf5010236;hpb=4e76c8a9fa413ccc09d3f7f664183dcce3555d57;p=linux-2.6.git

diff --git a/drivers/s390/s390mach.c b/drivers/s390/s390mach.c
index f99e55308..5399c5d99 100644
--- a/drivers/s390/s390mach.c
+++ b/drivers/s390/s390mach.c
@@ -8,12 +8,12 @@
  *		 Martin Schwidefsky (schwidefsky@de.ibm.com)
  */
 
-#include <linux/config.h>
 #include <linux/init.h>
 #include <linux/sched.h>
 #include <linux/errno.h>
 #include <linux/workqueue.h>
 #include <linux/time.h>
+#include <linux/kthread.h>
 
 #include <asm/lowcore.h>
 
@@ -56,8 +56,6 @@ s390_collect_crw_info(void *param)
 	unsigned int chain;
 
 	sem = (struct semaphore *)param;
-	/* Set a nice name. */
-	daemonize("kmcheck");
 repeat:
 	down_interruptible(sem);
 	slow = 0;
@@ -113,6 +111,16 @@ repeat:
 			break;
 		case CRW_RSC_CPATH:
 			pr_debug("source is channel path %02X\n", crw[0].rsid);
+			/*
+			 * Check for solicited machine checks. These are
+			 * created by reset channel path and need not be
+			 * reported to the common I/O layer.
+			 */
+			if (crw[chain].slct) {
+				DBG(KERN_INFO"solicited machine check for "
+				    "channel path %02X\n", crw[0].rsid);
+				break;
+			}
 			switch (crw[0].erc) {
 			case CRW_ERC_IPARM: /* Path has come. */
 				ret = chp_process_crw(crw[0].rsid, 1);
@@ -380,6 +388,8 @@ s390_do_machine_check(struct pt_regs *regs)
 	struct mcck_struct *mcck;
 	int umode;
 
+	lockdep_off();
+
 	mci = (struct mci *) &S390_lowcore.mcck_interruption_code;
 	mcck = &__get_cpu_var(cpu_mcck);
 	umode = user_mode(regs);
@@ -484,6 +494,7 @@ s390_do_machine_check(struct pt_regs *regs)
 		mcck->warning = 1;
 		set_thread_flag(TIF_MCCK_PENDING);
 	}
+	lockdep_on();
 }
 
 /*
@@ -516,7 +527,7 @@ arch_initcall(machine_check_init);
 static int __init
 machine_check_crw_init (void)
 {
-	kernel_thread(s390_collect_crw_info, &m_sem, CLONE_FS|CLONE_FILES);
+	kthread_run(s390_collect_crw_info, &m_sem, "kmcheck");
 	ctl_set_bit(14, 28);	/* enable channel report MCH */
 	return 0;
 }