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generic: convert crypto-ocf from kernel_thread to kthread

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recent kernels have finally stopped exporting kernel_thread, since a
deprecation circa 2006.  This patch attempts to convert to the newer
kernel kthread API, particularly in random.c

[juhosg: remove randomproc variable, it is not required after the patch]

Signed-off-by: Russell Senior <russell@personaltelco.net>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

SVN-Revision: 35456
This commit is contained in:
Gabor Juhos 2013-02-02 15:31:44 +00:00
parent 7c87d28054
commit 4c223d7d4f
1 changed files with 8 additions and 11 deletions
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19
target/linux/generic/files/crypto/ocf/random.c
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@ -49,6 +49,7 @@
#include <linux/unistd.h>
#include <linux/poll.h>
#include <linux/random.h>
#include <linux/kthread.h>
#include <cryptodev.h>
#ifdef CONFIG_OCF_FIPS
@ -79,9 +80,9 @@ struct random_op {
void *arg;
};
static struct task_struct *random_thread;
static int random_proc(void *arg);
static pid_t randomproc = (pid_t) -1;
static spinlock_t random_lock;
/*
@ -141,12 +142,10 @@ crypto_rregister(
spin_lock_irqsave(&random_lock, flags);
list_add_tail(&rops->random_list, &random_ops);
if (!started) {
randomproc = kernel_thread(random_proc, NULL, CLONE_FS|CLONE_FILES);
if (randomproc < 0) {
ret = randomproc;
printk("crypto: crypto_rregister cannot start random thread; "
"error %d", ret);
} else
random_thread = kthread_run(random_proc, NULL, "ocf-random");
if (IS_ERR(random_thread))
ret = PTR_ERR(random_thread);
else
started = 1;
}
spin_unlock_irqrestore(&random_lock, flags);
@ -172,7 +171,7 @@ crypto_runregister_all(u_int32_t driverid)
spin_lock_irqsave(&random_lock, flags);
if (list_empty(&random_ops) && started)
kill_proc(randomproc, SIGKILL, 1);
kthread_stop(random_thread);
spin_unlock_irqrestore(&random_lock, flags);
return(0);
}
@ -203,7 +202,6 @@ random_proc(void *arg)
sprintf(current->comm, "ocf-random");
#else
daemonize("ocf-random");
allow_signal(SIGKILL);
#endif
(void) get_fs();
@ -306,12 +304,11 @@ random_proc(void *arg)
#endif
}
}
kfree(buf);
bad_alloc:
spin_lock_irq(&random_lock);
randomproc = (pid_t) -1;
started = 0;
spin_unlock_irq(&random_lock);