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Message-Id: <2869da8587604e3fea5f85aeade486a08e8313bf.1257370736.git.inaky@linux.intel.com>
Date: Wed, 4 Nov 2009 13:40:03 -0800
From: Inaky Perez-Gonzalez <inaky@...ux.intel.com>
To: netdev@...r.kernel.org, wimax@...uxwimax.org
Subject: [PATCH 2.6.33/3 12/13] wimax/i2400m: do bootmode buffer management in i2400m_setup/release()
After the introduction of i2400m->bus_setup/release, there is no more
race condition where the bootmode buffers are needed before
i2400m_setup() is called.
Before, the SDIO driver would setup RX before calling i2400m_setup()
and thus need those buffers; now RX setup is done in
i2400m->bus_setup(), which is called by i2400m_setup().
Thus, all the bootmode buffer management can now be done completely
inside i2400m_setup()/i2400m_release(), removing complexity from the
bus-specific drivers.
Signed-off-by: Inaky Perez-Gonzalez <inaky@...ux.intel.com>
---
drivers/net/wimax/i2400m/driver.c | 28 +++++++++++++++++-----------
drivers/net/wimax/i2400m/i2400m.h | 2 --
drivers/net/wimax/i2400m/sdio.c | 14 --------------
drivers/net/wimax/i2400m/usb.c | 8 --------
4 files changed, 17 insertions(+), 35 deletions(-)
diff --git a/drivers/net/wimax/i2400m/driver.c b/drivers/net/wimax/i2400m/driver.c
index c57020f..4fcdb18 100644
--- a/drivers/net/wimax/i2400m/driver.c
+++ b/drivers/net/wimax/i2400m/driver.c
@@ -723,12 +723,13 @@ int i2400m_dev_reset_handle(struct i2400m *i2400m, const char *reason)
EXPORT_SYMBOL_GPL(i2400m_dev_reset_handle);
-/**
- * i2400m_bm_buf_alloc - Alloc the command and ack buffers for boot mode
+/*
+ * Alloc the command and ack buffers for boot mode
*
* Get the buffers needed to deal with boot mode messages. These
* buffers need to be allocated before the sdio recieve irq is setup.
*/
+static
int i2400m_bm_buf_alloc(struct i2400m *i2400m)
{
int result;
@@ -747,22 +748,19 @@ error_bm_ack_buf_kzalloc:
error_bm_cmd_kzalloc:
return result;
}
-EXPORT_SYMBOL_GPL(i2400m_bm_buf_alloc);
-/**
- * i2400m_bm_buf_free - Free boot mode command and ack buffers.
- *
- * Free the command and ack buffers
- *
+
+/*
+ * Free boot mode command and ack buffers.
*/
+static
void i2400m_bm_buf_free(struct i2400m *i2400m)
{
kfree(i2400m->bm_ack_buf);
kfree(i2400m->bm_cmd_buf);
- return;
}
-EXPORT_SYMBOL_GPL(i2400m_bm_buf_free
-);
+
+
/**
* i2400m_setup - bus-generic setup function for the i2400m device
*
@@ -786,6 +784,12 @@ int i2400m_setup(struct i2400m *i2400m, enum i2400m_bri bm_flags)
snprintf(wimax_dev->name, sizeof(wimax_dev->name),
"i2400m-%s:%s", dev->bus->name, dev_name(dev));
+ result = i2400m_bm_buf_alloc(i2400m);
+ if (result < 0) {
+ dev_err(dev, "cannot allocate bootmode scratch buffers\n");
+ goto error_bm_buf_alloc;
+ }
+
if (i2400m->bus_setup) {
result = i2400m->bus_setup(i2400m);
if (result < 0) {
@@ -860,6 +864,8 @@ error_bootrom_init:
if (i2400m->bus_release)
i2400m->bus_release(i2400m);
error_bus_setup:
+ i2400m_bm_buf_free(i2400m);
+error_bm_buf_alloc:
d_fnend(3, dev, "(i2400m %p) = %d\n", i2400m, result);
return result;
}
diff --git a/drivers/net/wimax/i2400m/i2400m.h b/drivers/net/wimax/i2400m/i2400m.h
index 407d097..1724955 100644
--- a/drivers/net/wimax/i2400m/i2400m.h
+++ b/drivers/net/wimax/i2400m/i2400m.h
@@ -817,8 +817,6 @@ void i2400m_put(struct i2400m *i2400m)
}
extern int i2400m_dev_reset_handle(struct i2400m *, const char *);
-extern int i2400m_bm_buf_alloc(struct i2400m *i2400m);
-extern void i2400m_bm_buf_free(struct i2400m *i2400m);
/*
* _setup()/_release() are called by the probe/disconnect functions of
diff --git a/drivers/net/wimax/i2400m/sdio.c b/drivers/net/wimax/i2400m/sdio.c
index 6e39665..14e66f0 100644
--- a/drivers/net/wimax/i2400m/sdio.c
+++ b/drivers/net/wimax/i2400m/sdio.c
@@ -519,18 +519,6 @@ int i2400ms_probe(struct sdio_func *func,
i2400m->bus_bm_mac_addr_impaired = 1;
i2400m->bus_bm_pokes_table = &i2400ms_pokes[0];
- /*
- * Before we are enabling the device interrupt register, make
- * sure the buffer used during bootmode operation is setup so
- * when the first D2H data interrupt comes, the memory is
- * available for copying the D2H data.
- */
- result = i2400m_bm_buf_alloc(i2400m);
- if (result < 0) {
- dev_err(dev, "cannot allocate SDIO bootmode buffer\n");
- goto error_bootmode_buf_setup;
- }
-
result = i2400m_setup(i2400m, I2400M_BRI_NO_REBOOT);
if (result < 0) {
dev_err(dev, "cannot setup device: %d\n", result);
@@ -548,8 +536,6 @@ int i2400ms_probe(struct sdio_func *func,
error_debugfs_add:
i2400m_release(i2400m);
error_setup:
- i2400m_bm_buf_free(i2400m);
-error_bootmode_buf_setup:
sdio_set_drvdata(func, NULL);
free_netdev(net_dev);
error_alloc_netdev:
diff --git a/drivers/net/wimax/i2400m/usb.c b/drivers/net/wimax/i2400m/usb.c
index 3bf3f72..7756797 100644
--- a/drivers/net/wimax/i2400m/usb.c
+++ b/drivers/net/wimax/i2400m/usb.c
@@ -447,12 +447,6 @@ int i2400mu_probe(struct usb_interface *iface,
usb_dev->autosuspend_disabled = 0;
#endif
- result = i2400m_bm_buf_alloc(i2400m);
- if (result < 0) {
- dev_err(dev, "cannot allocate USB bootmode buffer\n");
- goto error_bm_buf_alloc;
- }
-
result = i2400m_setup(i2400m, I2400M_BRI_MAC_REINIT);
if (result < 0) {
dev_err(dev, "cannot setup device: %d\n", result);
@@ -468,8 +462,6 @@ int i2400mu_probe(struct usb_interface *iface,
error_debugfs_add:
i2400m_release(i2400m);
error_setup:
- i2400m_bm_buf_free(i2400m);
-error_bm_buf_alloc:
usb_set_intfdata(iface, NULL);
usb_put_dev(i2400mu->usb_dev);
free_netdev(net_dev);
--
1.6.2.5
--
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