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| author | Oliver Neukum <oliver@neukum.org> | 2008-03-14 00:53:24 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-03-24 22:26:15 -0700 |
| commit | 4f4f9c53c241a0205434c76d05eba2c5f160e9d0 (patch) | |
| tree | bdb487c15fb22e4d07101ff77c3fa9b0453a0ab6 /drivers | |
| parent | cc36bdd47ae51b66780b317c1fa519221f894405 (diff) | |
| download | linux-stable-4f4f9c53c241a0205434c76d05eba2c5f160e9d0.tar.gz linux-stable-4f4f9c53c241a0205434c76d05eba2c5f160e9d0.tar.bz2 linux-stable-4f4f9c53c241a0205434c76d05eba2c5f160e9d0.zip | |
USB: sierra: dma fixes
while I was adding autosuspend to that driver I noticed a few issues.
You were having DMAed buffers as a part of a structure.
This will fail on platforms that are not DMA-coherent (arm, sparc, ppc, ...)
Please test this patch to fix it.
Signed-off-by: Kevin Lloyd <klloyd@sierrawireless.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/serial/sierra.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c index e3d44ae8d448..dda4d05fe237 100644 --- a/drivers/usb/serial/sierra.c +++ b/drivers/usb/serial/sierra.c @@ -14,7 +14,7 @@ Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org> */ -#define DRIVER_VERSION "v.1.2.7" +#define DRIVER_VERSION "v.1.2.8" #define DRIVER_AUTHOR "Kevin Lloyd <linux@sierrawireless.com>" #define DRIVER_DESC "USB Driver for Sierra Wireless USB modems" @@ -196,9 +196,9 @@ struct sierra_port_private { spinlock_t lock; /* lock the structure */ int outstanding_urbs; /* number of out urbs in flight */ - /* Input endpoints and buffer for this port */ + /* Input endpoints and buffers for this port */ struct urb *in_urbs[N_IN_URB]; - char in_buffer[N_IN_URB][IN_BUFLEN]; + char *in_buffer[N_IN_URB]; /* Settings for the port */ int rts_state; /* Handshaking pins (outputs) */ @@ -638,6 +638,15 @@ static int sierra_startup(struct usb_serial *serial) return -ENOMEM; } spin_lock_init(&portdata->lock); + for (j = 0; j < N_IN_URB; j++) { + portdata->in_buffer[j] = kmalloc(IN_BUFLEN, GFP_KERNEL); + if (!portdata->in_buffer[j]) { + for (--j; j >= 0; j--) + kfree(portdata->in_buffer[j]); + kfree(portdata); + return -ENOMEM; + } + } usb_set_serial_port_data(port, portdata); @@ -681,7 +690,7 @@ static void sierra_shutdown(struct usb_serial *serial) for (j = 0; j < N_IN_URB; j++) { usb_kill_urb(portdata->in_urbs[j]); usb_free_urb(portdata->in_urbs[j]); - portdata->in_urbs[j] = NULL; + kfree(portdata->in_buffer[j]); } kfree(portdata); usb_set_serial_port_data(port, NULL); |