The patch titled
esp: lock_kernel push down
has been removed from the -mm tree. Its filename was
esp-lock_kernel-push-down.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: esp: lock_kernel push down
From: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>
Push the BKL down into a few internal bits of code in this driver.
Signed-off-by: Alan Cox <alan@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/char/esp.c | 22 ++++++++++++++++------
1 file changed, 16 insertions(+), 6 deletions(-)
diff -puN drivers/char/esp.c~esp-lock_kernel-push-down drivers/char/esp.c
--- a/drivers/char/esp.c~esp-lock_kernel-push-down
+++ a/drivers/char/esp.c
@@ -1355,6 +1355,7 @@ static int get_serial_info(struct esp_st
{
struct serial_struct tmp;
+ lock_kernel();
memset(&tmp, 0, sizeof(tmp));
tmp.type = PORT_16550A;
tmp.line = info->line;
@@ -1367,6 +1368,7 @@ static int get_serial_info(struct esp_st
tmp.closing_wait = info->closing_wait;
tmp.custom_divisor = info->custom_divisor;
tmp.hub6 = 0;
+ unlock_kernel();
if (copy_to_user(retinfo,&tmp,sizeof(*retinfo)))
return -EFAULT;
return 0;
@@ -1381,6 +1383,7 @@ static int get_esp_config(struct esp_str
return -EFAULT;
memset(&tmp, 0, sizeof(tmp));
+ lock_kernel();
tmp.rx_timeout = info->config.rx_timeout;
tmp.rx_trigger = info->config.rx_trigger;
tmp.tx_trigger = info->config.tx_trigger;
@@ -1388,6 +1391,7 @@ static int get_esp_config(struct esp_str
tmp.flow_on = info->config.flow_on;
tmp.pio_threshold = info->config.pio_threshold;
tmp.dma_channel = (info->stat_flags & ESP_STAT_NEVER_DMA ? 0 : dma);
+ unlock_kernel();
return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0;
}
@@ -1766,6 +1770,7 @@ static int rs_ioctl(struct tty_struct *t
struct serial_icounter_struct __user *p_cuser; /* user space */
void __user *argp = (void __user *)arg;
unsigned long flags;
+ int ret;
if (serial_paranoia_check(info, tty->name, "rs_ioctl"))
return -ENODEV;
@@ -1783,7 +1788,10 @@ static int rs_ioctl(struct tty_struct *t
case TIOCGSERIAL:
return get_serial_info(info, argp);
case TIOCSSERIAL:
- return set_serial_info(info, argp);
+ lock_kernel();
+ ret = set_serial_info(info, argp);
+ unlock_kernel();
+ return ret;
case TIOCSERCONFIG:
/* do not reconfigure after initial configuration */
return 0;
@@ -1855,11 +1863,13 @@ static int rs_ioctl(struct tty_struct *t
return -EFAULT;
return 0;
- case TIOCGHAYESESP:
- return get_esp_config(info, argp);
- case TIOCSHAYESESP:
- return set_esp_config(info, argp);
-
+ case TIOCGHAYESESP:
+ return get_esp_config(info, argp);
+ case TIOCSHAYESESP:
+ lock_kernel();
+ ret = set_esp_config(info, argp);
+ unlock_kernel();
+ return ret;
default:
return -ENOIOCTLCMD;
}
_
Patches currently in -mm which might be from alan@xxxxxxxxxxxxxxxxxxx are
origin.patch
add-time_is_after_jiffies-and-others-which-compare-with-jiffies.patch
pata_atiixp-simplex-clear.patch
pata_atiixp-dont-disable.patch
8390-split-8390-support-into-a-pausing-and-a-non-pausing-driver-core.patch
parisc-new-termios-definitions.patch
generic-irq-let-setup_irq-reenable-a-shared-irq.patch
8250-switch-8250-drivers-to-use-_nocache-ioremaps.patch
sxc-fix-printk-warnings-on-sparc32.patch
put_pid-make-sure-we-dont-free-the-live-pid.patch
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