kernel/git/stable/linux.git/drivers/w1/masters, branch linux-3.15.y

w1: mxc_w1: Enable driver compilation with COMPILE_TEST

2014-02-28T23:27:09+00:00

This helps increasing build testing coverage. To do this, __raw_{read,write}b() functions was be replaced with simple {read,write}b() variants. Signed-off-by: Alexander Shiyan Signed-off-by: Greg Kroah-Hartman

w1: mxc_w1: Driver cleanup

2014-02-28T23:27:09+00:00

- Remove old and currently wrong address of the FSF from license parts of the code. - Remove unused #include and sort remaining headers alphabetically. - Remove unised definitions. - Add definitions for bit-fields. - Add missing module owner field. Signed-off-by: Alexander Shiyan Signed-off-by: Greg Kroah-Hartman

w1: mxc_w1: Fix mxc_w1_ds2_reset_bus() return value

2014-02-28T23:27:09+00:00

This patch fix mxc_w1_ds2_reset_bus() return value. According to i.MX reference manual, "presence status" reflected in the bit 6 of control register. Signed-off-by: Alexander Shiyan Signed-off-by: Greg Kroah-Hartman

w1: Remove excess dependencies on W1 for masters and slaves

2014-02-28T23:27:09+00:00

Configuration for masters and slaves is included only if W1 symbol enabled, so no reason to check it once more. Signed-off-by: Alexander Shiyan Signed-off-by: Greg Kroah-Hartman

w1-gpio: handle of_get_gpio() returning -EPROBE_DEFER better

2014-02-15T20:08:38+00:00

of_get_gpio() might return -EPROBE_DEFER meaning that the driver providing the gpio isn't ready yet. If that happens for the first gpio the resulting kernel output without this patch is: w1-gpio somename: Failed to parse DT platform somename: Driver w1-gpio requests probe deferral The first message is misleading and so is suppressed with this patch. Further if determining the gpio to switch the external pullup yields -EPROBE_DEFER this error should be passed back to the caller instead of just continuing without pullup. Signed-off-by: Uwe Kleine-König Signed-off-by: Greg Kroah-Hartman

Revert ds1wm.c from "w1: hold bus_mutex in netlink and search"

2014-02-08T21:30:43+00:00

This reverts ds1wm.c from commit d3a8a9dbb903c73a7ec2deae4c9b7d74b6834f4c. Of the three files changed ds1wm.c ds2490.c and w1_netlink.c, it turns out ds1wm.c was locking bus_mutex, but inside the loop and I missed it. Reverting ds1wm.c to the previous version. Reported-by: Dan Carpenter Signed-off-by: David Fries Signed-off-by: Greg Kroah-Hartman

w1: hold bus_mutex in netlink and search

2014-02-07T23:40:18+00:00

The bus_mutex needs to be taken to serialize access to a specific bus. netlink wasn't updated when bus_mutex was added and was calling without that lock held, and not all of the masters were holding the bus_mutex in a search. This was causing the ds2490 hardware to stop responding when both netlink and /sys slaves were executing bus commands at the same time. Signed-off-by: David Fries Acked-by: Evgeniy Polyakov Signed-off-by: Greg Kroah-Hartman

w1: ds2490 fix and enable hardware search

2014-02-07T23:40:18+00:00

The hardware search was failing without the COMM_RST flag. Enabled the flag and rewrote the function to handle more than one buffer of results and to continuing where the search left off. Remove hardware search note from the limitations now that it works. The "w1: ds2490 USB setup fixes" change went from 23.16 seconds to about 3 seconds, this takes the time for the search down to .307346 seconds. Signed-off-by: David Fries Acked-by: Evgeniy Polyakov Signed-off-by: Greg Kroah-Hartman

w1: ds2490 USB setup fixes

2014-02-07T23:40:18+00:00

Calling usb_reset_configuration after usb_set_interface resets the interface that was just selected, so call reset first. Using alternative 3 greatly speeds the one wire search. alt 0 or 1, 10ms int, 23.16 seconds alt 2 or 3, 1ms int, 2.99 to 3.05 seconds Use usb_interrupt_msg not usb_bulk_msg as it is an interrupt pipe (bulk worked, it was just technically the wrong call). Signed-off-by: David Fries Acked-by: Evgeniy Polyakov Signed-off-by: Greg Kroah-Hartman

w1: ds2490 reduce magic numbers

2014-02-07T23:40:18+00:00

Use a #define for the usb vendor request type, clear the status byte and use that instead of a magic offset in checking if idle. Signed-off-by: David Fries Acked-by: Evgeniy Polyakov Signed-off-by: Greg Kroah-Hartman