From ecb3b2b35db49778b6d89e3ffd0c400776c20735 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Fri, 18 Nov 2011 09:46:12 -0800 Subject: USB: convert drivers/media/* to use module_usb_driver() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This converts the drivers in drivers/media/* to use the module_usb_driver() macro which makes the code smaller and a bit simpler. Added bonus is that it removes some unneeded kernel log messages about drivers loading and/or unloading. Cc: Mauro Carvalho Chehab Cc: Luca Risolia Cc: Jean-Francois Moine Cc: Frank Zago Cc: Olivier Lorin Cc: Erik Andren Cc: Hans de Goede Cc: Brian Johnson Cc: Leandro Costantino Cc: Antoine Jacquet Cc: Jarod Wilson Cc: Florian Mickler Cc: Antti Palosaari Cc: Michael Krufky Cc: "David Härdeman" Cc: Florent Audebert Cc: Sam Doshi Cc: Manu Abraham Cc: Olivier Grenie Cc: Patrick Boettcher Cc: "Igor M. Liplianin" Cc: Derek Kelly Cc: Malcolm Priestley Cc: Steven Toth Cc: "André Weidemann" Cc: Martin Wilks Cc: Tejun Heo Cc: Jose Alberto Reguero Cc: David Henningsson Cc: Paul Gortmaker Cc: Joe Perches Cc: Jesper Juhl Cc: Lucas De Marchi Cc: Hans Verkuil Cc: Alexey Khoroshilov Cc: Anssi Hannula Cc: Rafi Rubin Cc: Dan Carpenter Cc: Paul Bender Cc: Devin Heitmueller Cc: "Márcio A Alves" Cc: Julia Lawall Cc: Laurent Pinchart Cc: Chris Rankin Cc: Lee Jones Cc: Andy Walls Cc: Andrew Morton Cc: Mike Frysinger Cc: Dean Anderson Cc: Pete Eberlein Cc: Arvydas Sidorenko Cc: Andrea Anacleto Signed-off-by: Greg Kroah-Hartman --- drivers/media/rc/redrat3.c | 20 +------------------- 1 file changed, 1 insertion(+), 19 deletions(-) (limited to 'drivers/media/rc/redrat3.c') diff --git a/drivers/media/rc/redrat3.c b/drivers/media/rc/redrat3.c index 61287fcca61a..07322fb75eff 100644 --- a/drivers/media/rc/redrat3.c +++ b/drivers/media/rc/redrat3.c @@ -1300,25 +1300,7 @@ static struct usb_driver redrat3_dev_driver = { .id_table = redrat3_dev_table }; -static int __init redrat3_dev_init(void) -{ - int ret; - - ret = usb_register(&redrat3_dev_driver); - if (ret < 0) - pr_err(DRIVER_NAME - ": usb register failed, result = %d\n", ret); - - return ret; -} - -static void __exit redrat3_dev_exit(void) -{ - usb_deregister(&redrat3_dev_driver); -} - -module_init(redrat3_dev_init); -module_exit(redrat3_dev_exit); +module_usb_driver(redrat3_dev_driver); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_AUTHOR(DRIVER_AUTHOR); -- cgit v1.2.3 From dbea1880368071dfa97d5e6aa4a368e7d0146a85 Mon Sep 17 00:00:00 2001 From: Andrew Vincer Date: Tue, 8 Nov 2011 12:43:45 -0300 Subject: [media] rc: Fix input deadlock and transmit error in redrat3 driver Fixed submit urb logic so hardware doesn't hang trying to transmit signal data Removed unneeded enable/disable detector commands in redrat3_transmit_ir (the hardware does this anyway) and converted arguments to unsigned as per 5588dc2 Signed-off-by: Andrew Vincer Cc: Jarod Wilson Signed-off-by: Mauro Carvalho Chehab --- drivers/media/rc/redrat3.c | 52 ++++++++++++++++------------------------------ 1 file changed, 18 insertions(+), 34 deletions(-) (limited to 'drivers/media/rc/redrat3.c') diff --git a/drivers/media/rc/redrat3.c b/drivers/media/rc/redrat3.c index 61287fcca61a..9bff23cb0a5b 100644 --- a/drivers/media/rc/redrat3.c +++ b/drivers/media/rc/redrat3.c @@ -286,12 +286,6 @@ static void redrat3_issue_async(struct redrat3_dev *rr3) rr3_ftr(rr3->dev, "Entering %s\n", __func__); - if (!rr3->det_enabled) { - dev_warn(rr3->dev, "not issuing async read, " - "detector not enabled\n"); - return; - } - memset(rr3->bulk_in_buf, 0, rr3->ep_in->wMaxPacketSize); res = usb_submit_urb(rr3->read_urb, GFP_ATOMIC); if (res) @@ -827,6 +821,7 @@ out: static void redrat3_handle_async(struct urb *urb, struct pt_regs *regs) { struct redrat3_dev *rr3; + int ret; if (!urb) return; @@ -840,15 +835,13 @@ static void redrat3_handle_async(struct urb *urb, struct pt_regs *regs) rr3_ftr(rr3->dev, "Entering %s\n", __func__); - if (!rr3->det_enabled) { - rr3_dbg(rr3->dev, "received a read callback but detector " - "disabled - ignoring\n"); - return; - } - switch (urb->status) { case 0: - redrat3_get_ir_data(rr3, urb->actual_length); + ret = redrat3_get_ir_data(rr3, urb->actual_length); + if (!ret) { + /* no error, prepare to read more */ + redrat3_issue_async(rr3); + } break; case -ECONNRESET: @@ -865,11 +858,6 @@ static void redrat3_handle_async(struct urb *urb, struct pt_regs *regs) rr3->pkttype = 0; break; } - - if (!rr3->transmitting) - redrat3_issue_async(rr3); - else - rr3_dbg(rr3->dev, "IR transmit in progress\n"); } static void redrat3_write_bulk_callback(struct urb *urb, struct pt_regs *regs) @@ -896,21 +884,24 @@ static u16 mod_freq_to_val(unsigned int mod_freq) return (u16)(65536 - (mult / mod_freq)); } -static int redrat3_set_tx_carrier(struct rc_dev *dev, u32 carrier) +static int redrat3_set_tx_carrier(struct rc_dev *rcdev, u32 carrier) { - struct redrat3_dev *rr3 = dev->priv; + struct redrat3_dev *rr3 = rcdev->priv; + struct device *dev = rr3->dev; + rr3_dbg(dev, "Setting modulation frequency to %u", carrier); rr3->carrier = carrier; return carrier; } -static int redrat3_transmit_ir(struct rc_dev *rcdev, int *txbuf, u32 n) +static int redrat3_transmit_ir(struct rc_dev *rcdev, unsigned *txbuf, + unsigned count) { struct redrat3_dev *rr3 = rcdev->priv; struct device *dev = rr3->dev; struct redrat3_signal_header header; - int i, j, count, ret, ret_len, offset; + int i, j, ret, ret_len, offset; int lencheck, cur_sample_len, pipe; char *buffer = NULL, *sigdata = NULL; int *sample_lens = NULL; @@ -928,20 +919,13 @@ static int redrat3_transmit_ir(struct rc_dev *rcdev, int *txbuf, u32 n) return -EAGAIN; } - count = n / sizeof(int); if (count > (RR3_DRIVER_MAXLENS * 2)) return -EINVAL; + /* rr3 will disable rc detector on transmit */ + rr3->det_enabled = false; rr3->transmitting = true; - redrat3_disable_detector(rr3); - - if (rr3->det_enabled) { - dev_err(dev, "%s: cannot tx while rx is enabled\n", __func__); - ret = -EIO; - goto out; - } - sample_lens = kzalloc(sizeof(int) * RR3_DRIVER_MAXLENS, GFP_KERNEL); if (!sample_lens) { ret = -ENOMEM; @@ -1055,7 +1039,7 @@ static int redrat3_transmit_ir(struct rc_dev *rcdev, int *txbuf, u32 n) if (ret < 0) dev_err(dev, "Error: control msg send failed, rc %d\n", ret); else - ret = n; + ret = count; out: kfree(sample_lens); @@ -1063,8 +1047,8 @@ out: kfree(sigdata); rr3->transmitting = false; - - redrat3_enable_detector(rr3); + /* rr3 re-enables rc detector because it was enabled before */ + rr3->det_enabled = true; return ret; } -- cgit v1.2.3