On 05/03/2016 06:35 AM, Adam Ford wrote:

On Fri, Apr 29, 2016 at 3:19 PM, Guenter Roeck [off-list ref] wrote:

quoted

v4.4 (arm:allmodconfig):

drivers/mtd/nand/pxa3xx_nand.c: In function 'alloc_nand_resource':
drivers/mtd/nand/pxa3xx_nand.c:1753:7: error: 'np' undeclared

v4.5 (arm:allmodconfig, arm:pxa_defconfig):

drivers/dma/pxa_dma.c: In function 'pxad_probe':
drivers/dma/pxa_dma.c:1421:24: error: 'struct mmp_dma_platdata' has no member named 'nb_requestors'

There is also a qemu runtime failure with omap2plus_defconfig in v4.4.

[    2.412322] omap_i2c 48070000.i2c: bus 0 rev3.3 at 2600 kHz
[    2.417541] omap_i2c 48060000.i2c: bus 2 rev3.3 at 100 kHz
[    2.429443]
[    2.429534] =====================================
[    2.429718] [ BUG: bad unlock balance detected! ]
[    2.429962] 4.4.8-00025-gcd58757 #1 Not tainted
[    2.430145] -------------------------------------
[    2.430328] kworker/u2:0/6 is trying to release lock (&rdev->mutex) at:
[    2.430694] [<c03b40e4>] regulator_set_voltage+0x40/0x54
[    2.430877] but there are no more locks to release!

I am also seeing this in 4.4.8 on an DM3730.  I didn't see it in
4.4.3.  I can also help bisect if it helps.
-adam

I ended up bisecting it [1]. The problem is seen in 4.4.7 and 4.4.8
(I originally thought 4.4.6 was affected as well, but it was introduced
in 4.4.7). It will be fixed in 4.4.9; the necessary patches are already
in the queue.

Guenter

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[1] http://thread.gmane.org/gmane.linux.kernel.stable/176811