Add assignment of the variant_regs field which is missing in commit
a5a56871f804edac93a53b5e871c0e9818fb9033 ("ASoC: samsung: add support
for exynos7 I2S controller"). Without this attempting to probe the
secondary DAI fails with an error like:
[ 1.763026] Unable to handle kernel NULL pointer dereference at virtual
address 0000000c
[ 1.780895] pgd = c0004000
[ 1.783606] [0000000c] *pgd=00000000
[ 1.838255] Internal error: Oops: 5 [#1] PREEMPT SMP ARM
[ 1.843514] Modules linked in:
[ 1.846558] CPU: 0 PID: 1 Comm: swapper/0 Not tainted
3.18.0-rc1-00009-g5dcb01e-dirty #1521
[ 1.854887] task: ee00a800 ti: ee088000 task.ti: ee088000
[ 1.860284] PC is at i2s_txctrl+0x40/0x2d4
[ 1.864350] LR is at i2s_txctrl+0x28/0x2d4
[ 1.868428] pc : [<c036ffd4>] lr : [<c036ffbc>] psr: 60000153
[ 1.868428] sp : ee089dc0 ip : 00000000 fp : ee21f000
[ 1.879883] r10: 00000000 r9 : ee21fb00 r8 : c06406c4
[ 1.885091] r7 : ee21fb00 r6 : 00000000 r5 : f00f6000 r4 : ed943410
[ 1.891601] r3 : 0000016c r2 : c0464550 r1 : c055cef8 r0 : ed943610
[ 1.898113] Flags: nZCv IRQs on FIQs off Mode SVC_32 ISA ARM Segment
kernel
[ 1.905490] Control: 10c5387d Table: 4000404a DAC: 00000015
[ 1.911218] Process swapper/0 (pid: 1, stack limit = 0xee088240)
[ 1.917208] Stack: (0xee089dc0 to 0xee08a000)
...
[ 2.068431] [<c036ffd4>] (i2s_txctrl) from [<c03719fc>]
(samsung_i2s_dai_probe+0xb8/0x450)
[ 2.076676] [<c03719fc>] (samsung_i2s_dai_probe) from [<c03607e0>]
(snd_soc_register_card+0xd98/0x1348)
[ 2.086044] [<c03607e0>] (snd_soc_register_card) from [<c03726e4>]
(odroidx2_audio_probe+0xa8/0x11c)
[ 2.095160] [<c03726e4>] (odroidx2_audio_probe) from [<c0249dd0>]
(platform_drv_probe+0x48/0xa4)
[ 2.103922] [<c0249dd0>] (platform_drv_probe) from [<c0248988>]
(driver_probe_device+0x10c/0x22c)
[ 2.112773] [<c0248988>] (driver_probe_device) from [<c0248b34>]
(__driver_attach+0x8c/0x90)
[ 2.121192] [<c0248b34>] (__driver_attach) from [<c02471c8>]
(bus_for_each_dev+0x54/0x88)
[ 2.129352] [<c02471c8>] (bus_for_each_dev) from [<c0248188>]
(bus_add_driver+0xd4/0x1d0)
[ 2.137510] [<c0248188>] (bus_add_driver) from [<c024915c>]
(driver_register+0x78/0xf4)
[ 2.145499] [<c024915c>] (driver_register) from [<c0008924>]
(do_one_initcall+0x80/0x1b8)
[ 2.153670] [<c0008924>] (do_one_initcall) from [<c05b7d40>]
(kernel_init_freeable+0xfc/0x1c8)
[ 2.162260] [<c05b7d40>] (kernel_init_freeable) from [<c04146c0>]
(kernel_init+0x8/0xec)
[ 2.170330] [<c04146c0>] (kernel_init) from [<c000e7f8>]
(ret_from_fork+0x14/0x3c)
[ 2.177873] Code: e5940000 e59f128c e59f228c e2800010 (e59c700c)
Signed-off-by: Sylwester Nawrocki <s.nawro...@samsung.com>
---
sound/soc/samsung/i2s.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index c7aafcd..eca17dc 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -1261,6 +1261,8 @@ static int samsung_i2s_probe(struct platform_device *pdev)
ret = -ENOMEM;
goto err;
}
+
+ sec_dai->variant_regs = pri_dai->variant_regs;
sec_dai->dma_playback.dma_addr = regs_base + I2STXDS;
sec_dai->dma_playback.ch_name = "tx-sec";
--
1.7.9.5
--
To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
