# ========================================================================== # Installing firmware # # We don't include the .config, so all firmware files are in $(fw-shipped-) # rather than in $(fw-shipped-y) or $(fw-shipped-m). # ========================================================================== INSTALL := install src := $(obj) # For modules_install installing firmware, we want to see .config # But for firmware_install, we don't care, but don't want to require it. -include $(objtree)/.config include scripts/Kbuild.include include $(src)/Makefile include scripts/Makefile.host mod-fw := $(fw-shipped-m) # If CONFIG_FIRMWARE_IN_KERNEL isn't set, then install the # firmware for in-kernel drivers too. ifndef CONFIG_FIRMWARE_IN_KERNEL mod-fw += $(fw-shipped-y) endif ifneq ($(KBUILD_SRC),) # Create output directory if not already present _dummy := $(shell [ -d $(obj) ] || mkdir -p $(obj)) firmware-dirs := $(sort $(addprefix $(objtree)/$(obj)/,$(dir $(fw-external-y) $(fw-shipped-all)))) # Create directories for firmware in subdirectories _dummy := $(foreach d,$(firmware-dirs), $(shell [ -d $(d) ] || mkdir -p $(d))) endif installed-mod-fw := $(addprefix $(INSTALL_FW_PATH)/,$(mod-fw)) installed-fw := $(addprefix $(INSTALL_FW_PATH)/,$(fw-shipped-all)) quiet_cmd_install = INSTALL $(subst $(srctree)/,,$@) cmd_install = mkdir -p $(@D); $(INSTALL) -m0644 $< $@ $(installed-fw): $(INSTALL_FW_PATH)/%: $(obj)/% $(call cmd,install) PHONY += __fw_install __fw_modinst FORCE .PHONY: $(PHONY) __fw_install: $(installed-fw) __fw_modinst: $(installed-mod-fw) @: __fw_modbuild: $(addprefix $(obj)/,$(mod-fw)) @: FORCE: # Read all saved command lines and dependencies for the $(targets) we # may be building using $(if_changed{,_dep}). As an optimization, we # don't need to read them if the target does not exist; we will rebuild # anyway in that case. targets := $(wildcard $(sort $(targets))) cmd_files := $(wildcard $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) ifneq ($(cmd_files),) include $(cmd_files) endif e028bb8b59e7cfeb0cc9ef03d885182ce8b'>commitdiff
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authorTony Lindgren <tony@atomide.com>2017-01-19 08:49:07 -0800
committerVinod Koul <vinod.koul@intel.com>2017-01-25 11:29:11 +0530
commitae4a3e028bb8b59e7cfeb0cc9ef03d885182ce8b (patch)
tree139fc7e29f97d6bb6c4dca2a97be2dc3f824bd51 /include/uapi
parent49def1853334396f948dcb4cedb9347abb318df5 (diff)
dmaengine: cppi41: Fix runtime PM timeouts with USB mass storage
Commit fdea2d09b997 ("dmaengine: cppi41: Add basic PM runtime support") added runtime PM support for cppi41, but had corner case issues. Some of the issues were fixed with commit 098de42ad670 ("dmaengine: cppi41: Fix unpaired pm runtime when only a USB hub is connected"). That fix however caused a new regression where we can get error -115 messages with USB on BeagleBone when connecting a USB mass storage device to a hub. This is because when connecting a USB mass storage device to a hub, the initial DMA transfers can take over 200ms to complete and cppi41 autosuspend delay times out. To fix the issue, we want to implement refcounting for chan_busy array that contains the active dma transfers. Increasing the autosuspend delay won't help as that the delay could be potentially seconds, and it's best to let the USB subsystem to deal with the timeouts on errors. The earlier attempt for runtime PM was buggy as the pm_runtime_get/put() calls could get unpaired easily as they did not follow the state of the chan_busy array as described in commit 098de42ad670 ("dmaengine: cppi41: Fix unpaired pm runtime when only a USB hub is connected". Let's fix the issue by adding pm_runtime_get() to where a new transfer is added to the chan_busy array, and calls to pm_runtime_put() where chan_busy array entry is cleared. This prevents any autosuspend timeouts from happening while dma transfers are active. Fixes: 098de42ad670 ("dmaengine: cppi41: Fix unpaired pm runtime when only a USB hub is connected") Fixes: fdea2d09b997 ("dmaengine: cppi41: Add basic PM runtime support") Cc: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Bin Liu <b-liu@ti.com> Cc: Grygorii Strashko <grygorii.strashko@ti.com> Cc: Kevin Hilman <khilman@baylibre.com> Cc: Patrick Titiano <ptitiano@baylibre.com> Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Tested-by: Bin Liu <b-liu@ti.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'include/uapi')