[PATCH] kfree cleanup: drivers/char
This is the drivers/char/ part of the big kfree cleanup patch.
Remove pointless checks for NULL prior to calling kfree() in drivers/char/.
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/char/consolemap.c b/drivers/char/consolemap.c
index 406dea9..c85a4fa 100644
--- a/drivers/char/consolemap.c
+++ b/drivers/char/consolemap.c
@@ -345,17 +345,15 @@
for (i = 0; i < 32; i++) {
if ((p1 = p->uni_pgdir[i]) != NULL) {
for (j = 0; j < 32; j++)
- if (p1[j])
- kfree(p1[j]);
+ kfree(p1[j]);
kfree(p1);
}
p->uni_pgdir[i] = NULL;
}
- for (i = 0; i < 4; i++)
- if (p->inverse_translations[i]) {
- kfree(p->inverse_translations[i]);
- p->inverse_translations[i] = NULL;
- }
+ for (i = 0; i < 4; i++) {
+ kfree(p->inverse_translations[i]);
+ p->inverse_translations[i] = NULL;
+ }
}
void con_free_unimap(struct vc_data *vc)
diff --git a/drivers/char/drm/ffb_context.c b/drivers/char/drm/ffb_context.c
index 8a6cc27..1383727 100644
--- a/drivers/char/drm/ffb_context.c
+++ b/drivers/char/drm/ffb_context.c
@@ -526,10 +526,8 @@
if (idx < 0 || idx >= FFB_MAX_CTXS)
return -EINVAL;
- if (fpriv->hw_state[idx] != NULL) {
- kfree(fpriv->hw_state[idx]);
- fpriv->hw_state[idx] = NULL;
- }
+ kfree(fpriv->hw_state[idx]);
+ fpriv->hw_state[idx] = NULL;
return 0;
}
diff --git a/drivers/char/drm/ffb_drv.c b/drivers/char/drm/ffb_drv.c
index 5c121d6..c13f9ab 100644
--- a/drivers/char/drm/ffb_drv.c
+++ b/drivers/char/drm/ffb_drv.c
@@ -245,14 +245,12 @@
static void ffb_driver_pretakedown(drm_device_t * dev)
{
- if (dev->dev_private)
- kfree(dev->dev_private);
+ kfree(dev->dev_private);
}
static int ffb_driver_postcleanup(drm_device_t * dev)
{
- if (ffb_position != NULL)
- kfree(ffb_position);
+ kfree(ffb_position);
return 0;
}
diff --git a/drivers/char/ip2/i2ellis.c b/drivers/char/ip2/i2ellis.c
index f834d05..dd761a1 100644
--- a/drivers/char/ip2/i2ellis.c
+++ b/drivers/char/ip2/i2ellis.c
@@ -106,9 +106,7 @@
static void
iiEllisCleanup(void)
{
- if ( pDelayTimer != NULL ) {
- kfree ( pDelayTimer );
- }
+ kfree(pDelayTimer);
}
//******************************************************************************
diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c
index e3ddbdb..ce3bc0d 100644
--- a/drivers/char/istallion.c
+++ b/drivers/char/istallion.c
@@ -860,10 +860,9 @@
if ((i = unregister_chrdev(STL_SIOMEMMAJOR, "staliomem")))
printk("STALLION: failed to un-register serial memory device, "
"errno=%d\n", -i);
- if (stli_tmpwritebuf != (char *) NULL)
- kfree(stli_tmpwritebuf);
- if (stli_txcookbuf != (char *) NULL)
- kfree(stli_txcookbuf);
+
+ kfree(stli_tmpwritebuf);
+ kfree(stli_txcookbuf);
for (i = 0; (i < stli_nrbrds); i++) {
if ((brdp = stli_brds[i]) == (stlibrd_t *) NULL)
diff --git a/drivers/char/n_hdlc.c b/drivers/char/n_hdlc.c
index 5079beda..c3660d8 100644
--- a/drivers/char/n_hdlc.c
+++ b/drivers/char/n_hdlc.c
@@ -264,8 +264,7 @@
} else
break;
}
- if (n_hdlc->tbuf)
- kfree(n_hdlc->tbuf);
+ kfree(n_hdlc->tbuf);
kfree(n_hdlc);
} /* end of n_hdlc_release() */
diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index 02d7f04..2c326ea 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -2994,8 +2994,7 @@
void rx_free_buffers(MGSLPC_INFO *info)
{
- if (info->rx_buf)
- kfree(info->rx_buf);
+ kfree(info->rx_buf);
info->rx_buf = NULL;
}
diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c
index 928b850..d3bc731 100644
--- a/drivers/char/rocket.c
+++ b/drivers/char/rocket.c
@@ -2512,10 +2512,8 @@
"rocketport driver\n", -retval);
put_tty_driver(rocket_driver);
- for (i = 0; i < MAX_RP_PORTS; i++) {
- if (rp_table[i])
- kfree(rp_table[i]);
- }
+ for (i = 0; i < MAX_RP_PORTS; i++)
+ kfree(rp_table[i]);
for (i = 0; i < NUM_BOARDS; i++) {
if (rcktpt_io_addr[i] <= 0 || is_PCI[i])
diff --git a/drivers/char/selection.c b/drivers/char/selection.c
index 16d630f..5b187c8 100644
--- a/drivers/char/selection.c
+++ b/drivers/char/selection.c
@@ -246,8 +246,7 @@
clear_selection();
return -ENOMEM;
}
- if (sel_buffer)
- kfree(sel_buffer);
+ kfree(sel_buffer);
sel_buffer = bp;
obp = bp;
diff --git a/drivers/char/stallion.c b/drivers/char/stallion.c
index 1c68641..95af2a9 100644
--- a/drivers/char/stallion.c
+++ b/drivers/char/stallion.c
@@ -785,8 +785,7 @@
"errno=%d\n", -i);
class_destroy(stallion_class);
- if (stl_tmpwritebuf != (char *) NULL)
- kfree(stl_tmpwritebuf);
+ kfree(stl_tmpwritebuf);
for (i = 0; (i < stl_nrbrds); i++) {
if ((brdp = stl_brds[i]) == (stlbrd_t *) NULL)
@@ -804,8 +803,7 @@
continue;
if (portp->tty != (struct tty_struct *) NULL)
stl_hangup(portp->tty);
- if (portp->tx.buf != (char *) NULL)
- kfree(portp->tx.buf);
+ kfree(portp->tx.buf);
kfree(portp);
}
kfree(panelp);
diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c
index 0133dc0..5d1ffa3 100644
--- a/drivers/char/synclink.c
+++ b/drivers/char/synclink.c
@@ -4016,9 +4016,7 @@
*/
static void mgsl_free_intermediate_rxbuffer_memory(struct mgsl_struct *info)
{
- if ( info->intermediate_rxbuffer )
- kfree(info->intermediate_rxbuffer);
-
+ kfree(info->intermediate_rxbuffer);
info->intermediate_rxbuffer = NULL;
} /* end of mgsl_free_intermediate_rxbuffer_memory() */
@@ -4072,10 +4070,8 @@
int i;
for ( i=0; i<info->num_tx_holding_buffers; ++i ) {
- if ( info->tx_holding_buffers[i].buffer ) {
- kfree(info->tx_holding_buffers[i].buffer);
- info->tx_holding_buffers[i].buffer=NULL;
- }
+ kfree(info->tx_holding_buffers[i].buffer);
+ info->tx_holding_buffers[i].buffer = NULL;
}
info->get_tx_holding_index = 0;
diff --git a/drivers/char/synclinkmp.c b/drivers/char/synclinkmp.c
index f185724..7c063c5 100644
--- a/drivers/char/synclinkmp.c
+++ b/drivers/char/synclinkmp.c
@@ -2788,10 +2788,8 @@
del_timer(&info->tx_timer);
del_timer(&info->status_timer);
- if (info->tx_buf) {
- kfree(info->tx_buf);
- info->tx_buf = NULL;
- }
+ kfree(info->tx_buf);
+ info->tx_buf = NULL;
spin_lock_irqsave(&info->lock,flags);
@@ -3611,8 +3609,7 @@
void free_tmp_rx_buf(SLMP_INFO *info)
{
- if (info->tmp_rx_buf)
- kfree(info->tmp_rx_buf);
+ kfree(info->tmp_rx_buf);
info->tmp_rx_buf = NULL;
}
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index c586bfa..4b1eef5 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -1416,14 +1416,11 @@
/* Release locally allocated memory ... nothing placed in slots */
free_mem_out:
- if (o_tp)
- kfree(o_tp);
+ kfree(o_tp);
if (o_tty)
free_tty_struct(o_tty);
- if (ltp)
- kfree(ltp);
- if (tp)
- kfree(tp);
+ kfree(ltp);
+ kfree(tp);
free_tty_struct(tty);
fail_no_mem:
