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x86-mce: BKL pushdown
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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1 changed files with 4 additions and 0 deletions
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@ -9,6 +9,7 @@
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/smp_lock.h>
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#include <linux/string.h>
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#include <linux/rcupdate.h>
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#include <linux/kallsyms.h>
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@ -527,10 +528,12 @@ static int open_exclu; /* already open exclusive? */
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static int mce_open(struct inode *inode, struct file *file)
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{
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lock_kernel();
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spin_lock(&mce_state_lock);
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if (open_exclu || (open_count && (file->f_flags & O_EXCL))) {
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spin_unlock(&mce_state_lock);
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unlock_kernel();
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return -EBUSY;
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}
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@ -539,6 +542,7 @@ static int mce_open(struct inode *inode, struct file *file)
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open_count++;
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spin_unlock(&mce_state_lock);
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unlock_kernel();
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return nonseekable_open(inode, file);
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}
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