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Commit 1e45a92c authored by Jeevan Shriram's avatar Jeevan Shriram
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mdss: fb: ensure that shared memory is available during probe 



Populate shared memory length during probe for availability
to userspace through FSCREENINFO ioctl. Also, ensure that fb
length is always available.

Change-Id: I94d3f83098fbfd81a7aa20f6fc1f19e756aebc4e
Signed-off-by: default avatarJeevan Shriram <jshriram@codeaurora.org>
parent 61b52bcb

drivers/video/msm/mdss/mdss_fb.c

+7 −2
Original line number Diff line number Diff line
@@ -1129,7 +1129,6 @@ void mdss_fb_free_fb_ion_memory(struct msm_fb_data_type *mfd) 


	mfd->fbi->screen_base = NULL;

	mfd->fbi->fix.smem_start = 0;

	mfd->fbi->fix.smem_len = 0;



	ion_unmap_kernel(mfd->fb_ion_client, mfd->fb_ion_handle);
@@ -1646,8 +1645,14 @@ static int mdss_fb_register(struct msm_fb_data_type *mfd) 
	var->hsync_len = panel_info->lcdc.h_pulse_width;

	var->pixclock = panel_info->clk_rate / 1000;



	/* id field for fb app  */

	/*

	 * Populate smem length here for uspace to get the

	 * Franebuffer size when FBIO_FSCREENINFO ioctl is

	 * called.

	 */

	fix->smem_len = fix->line_length * var->yres_virtual;



	/* id field for fb app  */

	id = (int *)&mfd->panel;



	snprintf(fix->id, sizeof(fix->id), "mdssfb_%x", (u32) *id);