- 25 Jan, 2017 37 commits
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Mathias Nyman authored
No functinal changes. num_tds describes the number of transfer descriptor better than "size" Signed-off-by:
Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Felipe Balbi authored
Let's start tracing at least part of an xhci_virt_device lifetime. We might want to extend this tracepoint class later, but for now it already exposes quite a bit of valuable information. Signed-off-by:
Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by:
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Felipe Balbi authored
If we add that newline, the output will look like the following: kworker/2:1-42 [002] .... 169.811435: xhci_address_ctx: ctx_64=0, ctx_type=2, ctx_dma=@153fbd000, ctx_va=@ffff880153fbd000 We would rather have that in a single line. Signed-off-by: -
Felipe Balbi authored
when getting endpoint type, a switch statement looks better than a series of if () branches. There are no functional changes with this patch, cleanup only. Signed-off-by:
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Felipe Balbi authored
These three new tracers will help us tie TRBs into URBs by *also* looking into URB lifetime. Signed-off-by:
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Felipe Balbi authored
instead of having a tracer that can only trace command completions, let's promote this tracer so it can trace and decode any TRB. With that, it will be easier to extrapolate the lifetime of any TRB which might help debugging certain issues. Signed-off-by:
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Felipe Balbi authored
If we just provide a helper to convert completion code to string, we can combine all debugging messages into a single print. [keep the old debug messages, for warn and grep -Mathias] Signed-off-by:
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Felipe Balbi authored
instead of using while(!list_empty()) followed by list_first_entry(), we can actually use list_for_each_entry_safe(). Signed-off-by:
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Mathias Nyman authored
Remove duplicate code by using trb_to_noop() when handling Aborted commads Based on earlier code by Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by:
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Mathias Nyman authored
Useful for turning both transfer and command trbs into no-ops. Based on earlier code by Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by:
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Felipe Balbi authored
xhci_unmap_td_bounce_buffer() already checks for a valid td->bounce_seg and bails out early if that's invalid. There's no need to check for this twice. Signed-off-by:
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Felipe Balbi authored
This way we can remove checks for valid ring from call sites of xhci_unmap_td_bounce_buffer() Signed-off-by:
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Felipe Balbi authored
handle_tx_event() is not releasing xhci->lock nor reacquiring it, remove the bogus annotation. Signed-off-by:
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Felipe Balbi authored
By extracting xhci_td_cleanup() from finish_td(), code before clearer and easier to follow. There are no functional changes with this patch. It's merely a cleanup. Signed-off-by:
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Felipe Balbi authored
no functional changes. Simple cleanup to make sure variables are ordered in a 'reverse christmas tree' fashion. While at that, also remove an obsolete comment which doesn't apply anymore. Signed-off-by:
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Felipe Balbi authored
Replace list_entry() with list_first_entry() and list_for_each() with list_for_each_entry(). This makes the code slightly more readable. Signed-off-by:
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Felipe Balbi authored
it does no good, let's remove it. Signed-off-by:
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Felipe Balbi authored
Instead of having several return points, let's use a local variable and a single place to return. This makes the code slightly easier to read. [set ret = IRQ_HANDLED in default working case -Mathias] Signed-off-by:
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Felipe Balbi authored
Cleanup only. This patch is a mechaninal rename to make sure our macros for TRB completion codes match what the specification uses to refer to such errors. The idea behind this is that it makes it far easier to grep the specification and match it with implementation. Signed-off-by:
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Felipe Balbi authored
When calling xhci_dbg_regs() we actually _do_ want to know XHCI's version. This might help figure out why certain problems only happen in some cases. Signed-off-by:
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Felipe Balbi authored
This is a cleanup patch only, no functional changes. The idea is just to make sure for loops look the same all over the driver. Signed-off-by:
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Lu Baolu authored
Remove the unnecessary return line in xhci_pci_setup(). Signed-off-by:
Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by:
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Lu Baolu authored
Use list_is_singular() to check if cmd_list has only one entry. [use list_empty() in queue command instead -Mathias] Signed-off-by:
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Lu Baolu authored
No need to calculate remainder and length_field, if there is no data phase of a control transfer. Signed-off-by:
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Lu Baolu authored
Drop an unnecessary assignment in prepare_transfer(). Signed-off-by:
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Felipe Balbi authored
In case 'quirk-broken-port-ped' property is passed in via device property, we should enable the corresponding BROKEN_PED quirk flag for XHCI core. [rogerq@ti.com] Updated code from platform data to device property and added DT binding. Signed-off-by:
Felipe Balbi <balbi@ti.com> Signed-off-by:
Roger Quadros <rogerq@ti.com> Signed-off-by:
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Felipe Balbi authored
Some devices from Texas Instruments [1] suffer from a silicon bug where Port Enabled/Disabled bit should not be used to silence an erroneous device. The bug is so that if port is disabled with PED bit, an IRQ for device removal (or attachment) will never fire. Just for the sake of completeness, the actual problem lies with SNPS USB IP and this affects all known versions up to 3.00a. A separate patch will be added to dwc3 to enabled this quirk flag if version is <= 3.00a. [1] - AM572x Silicon Errata http://www.ti.com/lit/er/sprz429j/sprz429j.pdf Section i896— USB xHCI Port Disable Feature Does Not Work Signed-off-by:
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Alexander Stein authored
This allows someone to grep for the complete warning message as in; xhci-hcd xhci-hcd.0.auto: USB core suspending device not in U0/U1/U2. Signed-off-by:
Alexander Stein <alexander.stein@systec-electronic.com> Signed-off-by:
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Baolin Wang authored
Since the 'addr_64' variable as legacy is unused now, then remove it from xhci_hcd structure. Signed-off-by:
Baolin Wang <baolin.wang@linaro.org> Signed-off-by:
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Lu Baolu authored
The second try was a workaround for (what we thought was) command ring failing to stop in the first place. But this turns out to be due to the race that we have fixed(see "xhci: Fix race related to abort operation"). With that fix, it is time to remove the second try. Signed-off-by:
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Mathias Nyman authored
Checking if the command timeout timer is pending when queueing the first command to the command ring is not really useful, remove it. Suggested-by:
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Mathias Nyman authored
A counter was used to find out if the stop endpoint completion raced with the stop endpoint timeout timer. This was needed in case the stop ep completion failed to delete the timer as it was running on anoter cpu. The EP_STOP_CMD_PENDING flag was not enough as a new stop endpoint command may be queued between the command completion and timeout function, which would set the flag back. Instead of the separate counter that was used we can detect the race by checking both the STOP_EP_PENDING flag and timer_pending in the timeout function. Signed-off-by:
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Mathias Nyman authored
We don't want to confuse halted and stalled endpoint states with a flag indicating we are waiting for a stop endpoint command to finish or timeout Signed-off-by:
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Mathias Nyman authored
No functional change, De Morgan !(A && B) = (!A || !B) Signed-off-by:
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Augusto Mecking Caringi authored
The 'isnew' variable in 'sddr09_write_lba' function is set but never used. This has been detected by building the driver with W=1: drivers/usb/storage/sddr09.c: In function ‘sddr09_write_lba’: drivers/usb/storage/sddr09.c:873:17: warning: variable ‘isnew’ set but not used [-Wunused-but-set-variable] int i, result, isnew; ^ Signed-off-by:Augusto Mecking Caringi <augustocaringi@gmail.com> Acked-by:
Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
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Bhumika Goyal authored
Declare musb_hdrc_config structures as const as they are only stored in the config field of a musb_hdrc_platform_data structure. This field is of type const, so musb_hdrc_config structures having this property can be made const too. Done using Coccinelle: @r disable optional_qualifier@ identifier x; position p; @@ static struct musb_hdrc_config x@p={...}; @ok@ struct musb_hdrc_platform_data pdata; identifier r.x; position p; @@ pdata.config=&x@p; @bad@ position p != {r.p,ok.p}; identifier r.x; @@ x@p @depends on !bad disable optional_qualifier@ identifier r.x; @@ +const struct musb_hdrc_config x; File size before: text data bss dec hex filename 1212 338 0 1550 60e drivers/usb/musb/jz4740.o File size after: text data bss dec hex filename 1268 290 0 1558 616 drivers/usb/musb/jz4740.o File size before: text data bss dec hex filename 6151 333 16 6500 1964 drivers/usb/musb/sunxi.o File size after: text data bss dec hex filename 6215 269 16 6500 1964 drivers/usb/musb/sunxi.o File size before: text data bss dec hex filename 3668 864 0 4532 11b4 drivers/usb/musb/ux500.o File size after: text data bss dec hex filename 3724 808 0 4532 11b4 drivers/usb/musb/ux500.o Signed-off-by:Bhumika Goyal <bhumirks@gmail.com> Signed-off-by:
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Greg Kroah-Hartman authored
We need the USB fixes in here as well to handle future merge issues and dependancies. Signed-off-by:
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- 22 Jan, 2017 3 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fix from Thomas Gleixner: "Restore the retrigger callbacks in the IO APIC irq chips. That addresses a long standing regression which got introduced with the rewrite of the x86 irq subsystem two years ago and went unnoticed so far" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/ioapic: Restore IO-APIC irq_chip retrigger callback
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull smp/hotplug fix from Thomas Gleixner: "Remove an unused variable which is a leftover from the notifier removal" * 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: cpu/hotplug: Remove unused but set variable in _cpu_down()
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