linux-dev/drivers/usb/c67x00, branch master

USB: c67x00: remove unnecessary check of res

2022-05-12T09:36:46Z

The resource is checked in probe function, so there is no need do this check in remove function. Signed-off-by: Yang Yingliang Link: https://lore.kernel.org/r/20220510112804.2401150-1-yangyingliang@huawei.com Signed-off-by: Greg Kroah-Hartman

usb: remove third argument of usb_maxpacket()

2022-04-23T08:33:53Z

The third argument of usb_maxpacket(): in_out has been deprecated because it could be derived from the second argument (e.g. using usb_pipeout(pipe)). N.B. function usb_maxpacket() was made variadic to accommodate the transition from the old prototype with three arguments to the new one with only two arguments (so that no renaming is needed). The variadic argument is to be removed once all users of usb_maxpacket() get migrated. CC: Duncan Sands CC: Alan Stern CC: Olav Kongas CC: Rui Miguel Silva Signed-off-by: Vincent Mailhol Link: https://lore.kernel.org/r/20220317035514.6378-7-mailhol.vincent@wanadoo.fr Signed-off-by: Greg Kroah-Hartman

usb/c67x00: Replace tasklet with work

2021-01-26T17:36:37Z

Tasklets have long been deprecated as being too heavy on the system by running in irq context - and this is not a performance critical path. If a higher priority process wants to run, it must wait for the tasklet to finish before doing so. c67x00_do_work() will now run in process context and have further concurrency (tasklets being serialized among themselves), but this is done holding the c67x00->lock, so it should be fine. Furthermore, this patch fixes the usage of the lock in the callback as otherwise it would need to be irq-safe. Signed-off-by: Davidlohr Bueso Link: https://lore.kernel.org/r/20210113031537.79859-1-dave@stgolabs.net Signed-off-by: Greg Kroah-Hartman

Merge 5.9-rc3 into usb-next

2020-08-31T05:11:45Z

We want the USB fixes in here as well. Signed-off-by: Greg Kroah-Hartman

treewide: Use fallthrough pseudo-keyword

2020-08-23T22:36:59Z

Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva

usb: c67x00: convert tasklets to use new tasklet_setup() API

2020-08-18T11:00:00Z

In preparation for unconditionally passing the struct tasklet_struct pointer to all tasklet callbacks, switch to using the new tasklet_setup() and from_tasklet() to pass the tasklet pointer explicitly. Signed-off-by: Romain Perier Signed-off-by: Allen Pais Link: https://lore.kernel.org/r/20200817090209.26351-3-allen.cryptic@gmail.com Signed-off-by: Greg Kroah-Hartman

Merge 5.8-rc6 into usb-next

2020-07-20T07:41:30Z

We need the USB fixes in here as well. Signed-off-by: Greg Kroah-Hartman

usb: c67x00: c67x00-hcd: Demote obvious misuse of kerneldoc to standard comment blocks

2020-07-15T15:25:57Z

No attempt has been made to document any of the functions here. Fixes the following W=1 kernel build warning(s): drivers/usb/c67x00/c67x00-hcd.c:237: warning: Function parameter or member 'sie' not described in 'c67x00_hcd_irq' drivers/usb/c67x00/c67x00-hcd.c:237: warning: Function parameter or member 'int_status' not described in 'c67x00_hcd_irq' drivers/usb/c67x00/c67x00-hcd.c:237: warning: Function parameter or member 'msg' not described in 'c67x00_hcd_irq' drivers/usb/c67x00/c67x00-hcd.c:267: warning: Function parameter or member 'hcd' not described in 'c67x00_hcd_start' drivers/usb/c67x00/c67x00-hcd.c:279: warning: Function parameter or member 'hcd' not described in 'c67x00_hcd_stop' Cc: Peter Korsgaard Cc: Oliver Neukum Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20200715093209.3165641-7-lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman

USB: c67x00: fix use after free in c67x00_giveback_urb

2020-07-10T07:01:41Z

clang static analysis flags this error c67x00-sched.c:489:55: warning: Use of memory after it is freed [unix.Malloc] usb_hcd_giveback_urb(c67x00_hcd_to_hcd(c67x00), urb, urbp->status); ^~~~~~~~~~~~ Problem happens in this block of code c67x00_release_urb(c67x00, urb); usb_hcd_unlink_urb_from_ep(c67x00_hcd_to_hcd(c67x00), urb); spin_unlock(&c67x00->lock); usb_hcd_giveback_urb(c67x00_hcd_to_hcd(c67x00), urb, urbp->status); In the call to c67x00_release_urb has this freeing of urbp urbp = urb->hcpriv; urb->hcpriv = NULL; list_del(&urbp->hep_node); kfree(urbp); And so urbp is freed before usb_hcd_giveback_urb uses it as its 3rd parameter. Since all is required is the status, pass the status directly as is done in c64x00_urb_dequeue Fixes: e9b29ffc519b ("USB: add Cypress c67x00 OTG controller HCD driver") Signed-off-by: Tom Rix Cc: stable Link: https://lore.kernel.org/r/20200708131243.24336-1-trix@redhat.com Signed-off-by: Greg Kroah-Hartman

usb: c67x00: c67x00-sched: Demote obvious misuse of kerneldoc to standard comment blocks

2020-07-03T08:18:40Z

No attempt has been made to document any of the functions here. Fixes the following W=1 kernel build warning(s): drivers/usb/c67x00/c67x00-sched.c:35: warning: Function parameter or member 'queue' not described in 'c67x00_ep_data' drivers/usb/c67x00/c67x00-sched.c:35: warning: Function parameter or member 'node' not described in 'c67x00_ep_data' drivers/usb/c67x00/c67x00-sched.c:35: warning: Function parameter or member 'hep' not described in 'c67x00_ep_data' drivers/usb/c67x00/c67x00-sched.c:35: warning: Function parameter or member 'dev' not described in 'c67x00_ep_data' drivers/usb/c67x00/c67x00-sched.c:35: warning: Function parameter or member 'next_frame' not described in 'c67x00_ep_data' drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'ly_base_addr' not described in 'c67x00_td' drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'port_length' not described in 'c67x00_td' drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'pid_ep' not described in 'c67x00_td' drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'dev_addr' not described in 'c67x00_td' drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'ctrl_reg' not described in 'c67x00_td' drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'status' not described in 'c67x00_td' drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'retry_cnt' not described in 'c67x00_td' drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'residue' not described in 'c67x00_td' drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'next_td_addr' not described in 'c67x00_td' drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'td_list' not described in 'c67x00_td' drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'td_addr' not described in 'c67x00_td' drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'data' not described in 'c67x00_td' drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'urb' not described in 'c67x00_td' drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'privdata' not described in 'c67x00_td' drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'ep_data' not described in 'c67x00_td' drivers/usb/c67x00/c67x00-sched.c:71: warning: Function parameter or member 'pipe' not described in 'c67x00_td' drivers/usb/c67x00/c67x00-sched.c:137: warning: Function parameter or member 'c67x00' not described in 'dbg_td' drivers/usb/c67x00/c67x00-sched.c:137: warning: Function parameter or member 'td' not described in 'dbg_td' drivers/usb/c67x00/c67x00-sched.c:137: warning: Function parameter or member 'msg' not described in 'dbg_td' drivers/usb/c67x00/c67x00-sched.c:169: warning: Function parameter or member 'a' not described in 'frame_add' drivers/usb/c67x00/c67x00-sched.c:169: warning: Function parameter or member 'b' not described in 'frame_add' drivers/usb/c67x00/c67x00-sched.c:177: warning: Function parameter or member 'a' not described in 'frame_after' drivers/usb/c67x00/c67x00-sched.c:177: warning: Function parameter or member 'b' not described in 'frame_after' drivers/usb/c67x00/c67x00-sched.c:186: warning: Function parameter or member 'a' not described in 'frame_after_eq' drivers/usb/c67x00/c67x00-sched.c:186: warning: Function parameter or member 'b' not described in 'frame_after_eq' drivers/usb/c67x00/c67x00-sched.c:199: warning: Function parameter or member 'c67x00' not described in 'c67x00_release_urb' drivers/usb/c67x00/c67x00-sched.c:199: warning: Function parameter or member 'urb' not described in 'c67x00_release_urb' drivers/usb/c67x00/c67x00-sched.c:566: warning: Function parameter or member 'c67x00' not described in 'c67x00_create_td' drivers/usb/c67x00/c67x00-sched.c:566: warning: Function parameter or member 'urb' not described in 'c67x00_create_td' drivers/usb/c67x00/c67x00-sched.c:566: warning: Function parameter or member 'data' not described in 'c67x00_create_td' drivers/usb/c67x00/c67x00-sched.c:566: warning: Function parameter or member 'len' not described in 'c67x00_create_td' drivers/usb/c67x00/c67x00-sched.c:566: warning: Function parameter or member 'pid' not described in 'c67x00_create_td' drivers/usb/c67x00/c67x00-sched.c:566: warning: Function parameter or member 'toggle' not described in 'c67x00_create_td' drivers/usb/c67x00/c67x00-sched.c:566: warning: Function parameter or member 'privdata' not described in 'c67x00_create_td' drivers/usb/c67x00/c67x00-sched.c:692: warning: Function parameter or member 'c67x00' not described in 'c67x00_add_ctrl_urb' drivers/usb/c67x00/c67x00-sched.c:692: warning: Function parameter or member 'urb' not described in 'c67x00_add_ctrl_urb' drivers/usb/c67x00/c67x00-sched.c:830: warning: Function parameter or member 'c67x00' not described in 'c67x00_parse_td' drivers/usb/c67x00/c67x00-sched.c:830: warning: Function parameter or member 'td' not described in 'c67x00_parse_td' drivers/usb/c67x00/c67x00-sched.c:978: warning: Function parameter or member 'c67x00' not described in 'c67x00_check_td_list' drivers/usb/c67x00/c67x00-sched.c:1052: warning: Function parameter or member 'c67x00' not described in 'c67x00_send_td' drivers/usb/c67x00/c67x00-sched.c:1052: warning: Function parameter or member 'td' not described in 'c67x00_send_td' drivers/usb/c67x00/c67x00-sched.c:1088: warning: Function parameter or member 'c67x00' not described in 'c67x00_do_work' Cc: Peter Korsgaard Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20200702144625.2533530-31-lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman