diff options
author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-18 15:14:10 (GMT) |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-18 15:14:10 (GMT) |
commit | 6b7ced68f3fbbab6e9625b957f1ea0add22a5ac7 (patch) | |
tree | 40e367c4a0c6fd920faa69b0f948fcb0877f7b40 /drivers/usb | |
parent | 470809741a28c3092279f4e1f3f432e534d46068 (diff) | |
parent | 69da85edbab5cd42909d3ba65b3dad1c1fb40206 (diff) | |
download | linux-fsl-qoriq-6b7ced68f3fbbab6e9625b957f1ea0add22a5ac7.tar.xz |
Merge tag 'fixes-for-v3.7-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus
usb: fixes for v3.7-rc2
Here's the first set of fixes for v3.7-rc cycle.
DesignWare Core USB3 Driver (dwc3) got two fixes. The first one fixes a long
standing bug which would keep endpoint with BUSY flag set forever if we cancel
a transfer which has already been started by the controller. The second fix
will just switch PHYs back off when DWC3 driver is removed.
MUSB fixed a bug which would cause a Kernel Oops at least on AM3517 when
removing a device. For some reason that particular device can fall into a
situation where you have both Disconnect and Endpoint IRQs happen
simultaneously (have both bits set in IRQ_STATUS register) and, because
Disconnect Interrupt is handled before Endpoint Interrupts, we would try to
transfer data over a disconnected device, thus generating a kernel oops.
Renensas' USB DRD driver got two fixes which are a) fixing an off-by-one bug on
the pipe iterator implementation and b) fixing Interrupt Status Clear procedure
in order to properly clear a single Interrupt event without clearing (and
masking) other events we didn't handle yet.
Diffstat (limited to 'drivers/usb')
-rw-r--r-- | drivers/usb/dwc3/core.c | 4 | ||||
-rw-r--r-- | drivers/usb/dwc3/gadget.c | 2 | ||||
-rw-r--r-- | drivers/usb/gadget/lpc32xx_udc.c | 4 | ||||
-rw-r--r-- | drivers/usb/musb/am35x.c | 6 | ||||
-rw-r--r-- | drivers/usb/renesas_usbhs/mod.c | 6 | ||||
-rw-r--r-- | drivers/usb/renesas_usbhs/pipe.h | 2 |
6 files changed, 17 insertions, 7 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index b415c0c..c14ebc9 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -409,6 +409,10 @@ static void dwc3_core_exit(struct dwc3 *dwc) { dwc3_event_buffers_cleanup(dwc); dwc3_free_event_buffers(dwc); + + usb_phy_shutdown(dwc->usb2_phy); + usb_phy_shutdown(dwc->usb3_phy); + } #define DWC3_ALIGN_MASK (16 - 1) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index c9e729a..7b7dedd 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1904,7 +1904,7 @@ static void dwc3_stop_active_transfer(struct dwc3 *dwc, u32 epnum) ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, cmd, ¶ms); WARN_ON_ONCE(ret); dep->resource_index = 0; - + dep->flags &= ~DWC3_EP_BUSY; udelay(100); } diff --git a/drivers/usb/gadget/lpc32xx_udc.c b/drivers/usb/gadget/lpc32xx_udc.c index f696fb9..21a9861 100644 --- a/drivers/usb/gadget/lpc32xx_udc.c +++ b/drivers/usb/gadget/lpc32xx_udc.c @@ -2930,10 +2930,10 @@ static void vbus_work(struct work_struct *work) /* Get the VBUS status from the transceiver */ value = i2c_smbus_read_byte_data(udc->isp1301_i2c_client, - ISP1301_I2C_OTG_CONTROL_2); + ISP1301_I2C_INTERRUPT_SOURCE); /* VBUS on or off? */ - if (value & OTG_B_SESS_VLD) + if (value & INT_SESS_VLD) udc->vbus = 1; else udc->vbus = 0; diff --git a/drivers/usb/musb/am35x.c b/drivers/usb/musb/am35x.c index 457f25e..c964d6a 100644 --- a/drivers/usb/musb/am35x.c +++ b/drivers/usb/musb/am35x.c @@ -305,6 +305,12 @@ static irqreturn_t am35x_musb_interrupt(int irq, void *hci) ret = IRQ_HANDLED; } + /* Drop spurious RX and TX if device is disconnected */ + if (musb->int_usb & MUSB_INTR_DISCONNECT) { + musb->int_tx = 0; + musb->int_rx = 0; + } + if (musb->int_tx || musb->int_rx || musb->int_usb) ret |= musb_interrupt(musb); diff --git a/drivers/usb/renesas_usbhs/mod.c b/drivers/usb/renesas_usbhs/mod.c index 35c5208..61933a9 100644 --- a/drivers/usb/renesas_usbhs/mod.c +++ b/drivers/usb/renesas_usbhs/mod.c @@ -273,9 +273,9 @@ static irqreturn_t usbhs_interrupt(int irq, void *data) usbhs_write(priv, INTSTS0, ~irq_state.intsts0 & INTSTS0_MAGIC); usbhs_write(priv, INTSTS1, ~irq_state.intsts1 & INTSTS1_MAGIC); - usbhs_write(priv, BRDYSTS, 0); - usbhs_write(priv, NRDYSTS, 0); - usbhs_write(priv, BEMPSTS, 0); + usbhs_write(priv, BRDYSTS, ~irq_state.brdysts); + usbhs_write(priv, NRDYSTS, ~irq_state.nrdysts); + usbhs_write(priv, BEMPSTS, ~irq_state.bempsts); /* * call irq callback functions diff --git a/drivers/usb/renesas_usbhs/pipe.h b/drivers/usb/renesas_usbhs/pipe.h index 08786c0..3d80c7b 100644 --- a/drivers/usb/renesas_usbhs/pipe.h +++ b/drivers/usb/renesas_usbhs/pipe.h @@ -54,7 +54,7 @@ struct usbhs_pipe_info { * pipe list */ #define __usbhs_for_each_pipe(start, pos, info, i) \ - for (i = start, pos = (info)->pipe; \ + for (i = start, pos = (info)->pipe + i; \ i < (info)->size; \ i++, pos = (info)->pipe + i) |