Commit 24113071 authored Oct 09, 2014 by Ankit Gupta

i2c-msm-v2: initialize xfer mode structures in qup init



Unitialized blk mode structure cause crash when DMA gets disabled
from dt, forcing use of block mode for transfers > 64 bytes.
This patch initialize the xfer mode structures during the qup
intialization for all the xfer modes to avoid any unitialized access.

Change-Id: Ia2e44298948c8bbe15d751f9499cfd1c9b0ece4c
Signed-off-by: Ankit Gupta <ankgupta@codeaurora.org>

parent 9b4d473e

drivers/i2c/busses/i2c-msm-v2.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -2888,6 +2888,11 @@ static int i2c_msm_qup_init(struct i2c_msm_ctrl *ctrl)
		if (ret)
		return ret;

		/* Initialize the xfer mode structures */
		i2c_msm_fifo_get_struct(ctrl);
		i2c_msm_blk_get_struct(ctrl);
		i2c_msm_bam_get_struct(ctrl);

		i2c_msm_qup_fifo_calc_size(ctrl);
		/*
		* Ensure that QUP configuration is written and that fifo size if read