/**
* ispresizer_config_datapath - Specifies which input to use in resizer module
* @input: Indicates the module that gives the image to resizer.
*
* Sets up the default resizer configuration according to the arguments.
*
* Returns 0 if successful, or -1 if an unsupported input was requested.
**/
int ispresizer_config_datapath(enum ispresizer_input input)
{
u32 cnt = 0;
DPRINTK_ISPRESZ("ispresizer_config_datapath()+\n");
ispres_obj.resinput = input;
switch (input) {
case RSZ_OTFLY_YUV:
cnt &= ~ISPRSZ_CNT_INPTYP;
cnt &= ~ISPRSZ_CNT_INPSRC;
ispresizer_set_inaddr(0);
ispresizer_config_inlineoffset(0);
break;
case RSZ_MEM_YUV:
cnt |= ISPRSZ_CNT_INPSRC;
cnt &= ~ISPRSZ_CNT_INPTYP;
break;
case RSZ_MEM_COL8:
cnt |= ISPRSZ_CNT_INPSRC;
cnt |= ISPRSZ_CNT_INPTYP;
break;
default:
DPRINTK_ISPRESZ( "ISP_ERR : Wrong Input\n");
return -1;
}
isp_reg_or(OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, cnt);
//ispresizer_config_ycpos(0);
ispresizer_config_ycpos(1);
ispresizer_config_filter_coef(&ispreszdefcoef);
ispresizer_enable_cbilin(0);
ispresizer_config_luma_enhance(&ispreszdefaultyenh);
DPRINTK_ISPRESZ("ispresizer_config_datapath()-\n");
return 0;
}
/**
* ispresizer_config_datapath - Specifies which input to use in resizer module
* @input: Indicates the module that gives the image to resizer.
*
* Sets up the default resizer configuration according to the arguments.
*
* Returns 0 if successful, or -EINVAL if an unsupported input was requested.
**/
int ispresizer_config_datapath(enum ispresizer_input input)
{
u32 cnt = 0;
DPRINTK_ISPRESZ("ispresizer_config_datapath()+\n");
ispres_obj.resinput = input;
switch (input) {
case RSZ_OTFLY_YUV:
cnt &= ~ISPRSZ_CNT_INPTYP;
cnt &= ~ISPRSZ_CNT_INPSRC;
ispresizer_set_inaddr(0);
ispresizer_config_inlineoffset(0);
break;
case RSZ_MEM_YUV:
cnt |= ISPRSZ_CNT_INPSRC;
cnt &= ~ISPRSZ_CNT_INPTYP;
break;
case RSZ_MEM_COL8:
cnt |= ISPRSZ_CNT_INPSRC;
cnt |= ISPRSZ_CNT_INPTYP;
break;
default:
printk(KERN_ERR "ISP_ERR : Wrong Input\n");
return -EINVAL;
}
isp_reg_or(OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, cnt);
/* Use bilinear interpolation for upsampling per TRM */
if (ispres_obj.outputwidth > ispres_obj.inputwidth)
ispresizer_enable_cbilin(1);
else
ispresizer_enable_cbilin(0);
ispresizer_config_ycpos(0);
ispresizer_config_filter_coef(&ispreszdefcoef);
ispresizer_config_luma_enhance(&ispreszdefaultyenh);
DPRINTK_ISPRESZ("ispresizer_config_datapath()-\n");
return 0;
}
/**
* ispresizer_config_size - Configures input and output image size.
* @input_w: input width for the resizer in number of pixels per line.
* @input_h: input height for the resizer in number of lines.
* @output_w: output width from the resizer in number of pixels per line.
* @output_h: output height for the resizer in number of lines.
*
* Configures the appropriate values stored in the isp_res structure in the
* resizer registers.
*
* Returns 0 if successful, or -EINVAL if passed values haven't been verified
* with ispresizer_try_size() previously.
**/
int ispresizer_config_size(u32 input_w, u32 input_h, u32 output_w,
u32 output_h)
{
int i, j;
u32 res;
DPRINTK_ISPRESZ("ispresizer_config_size()+, input_w = %d,input_h ="
" %d, output_w = %d, output_h"
" = %d,hresz = %d,vresz = %d,"
" hcrop = %d, vcrop = %d,"
" hstph = %d, vstph = %d\n",
ispres_obj.inputwidth,
ispres_obj.inputheight,
ispres_obj.outputwidth,
ispres_obj.outputheight,
ispres_obj.h_resz,
ispres_obj.v_resz,
ispres_obj.ipwd_crop,
ispres_obj.ipht_crop,
ispres_obj.h_startphase,
ispres_obj.v_startphase);
if ((output_w != ispres_obj.outputwidth)
|| (output_h != ispres_obj.outputheight)) {
printk(KERN_ERR "Output parameters passed do not match the"
" values calculated by the"
" trysize passed w %d, h %d"
" \n", output_w , output_h);
return -EINVAL;
}
/* Set Resizer input address and offset adderss */
ispresizer_config_inlineoffset(isp_reg_readl(OMAP3_ISP_IOMEM_PREV,
ISPPRV_WADD_OFFSET));
res = isp_reg_readl(OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT) &
~(ISPRSZ_CNT_HSTPH_MASK | ISPRSZ_CNT_VSTPH_MASK);
isp_reg_writel(res |
(ispres_obj.h_startphase << ISPRSZ_CNT_HSTPH_SHIFT) |
(ispres_obj.v_startphase << ISPRSZ_CNT_VSTPH_SHIFT),
OMAP3_ISP_IOMEM_RESZ,
ISPRSZ_CNT);
/* Set start address for cropping */
isp_reg_writel(ispres_obj.tmp_buf + isp_get_buf_offset(),
OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_INADD);
/*
isp_reg_writel(
((ispres_obj.ipwd_crop & 15) << ISPRSZ_IN_START_HORZ_ST_SHIFT) |
(0x00 << ISPRSZ_IN_START_VERT_ST_SHIFT),
OMAP3_ISP_IOMEM_RESZ, ISPRSZ_IN_START);
*/
isp_reg_writel((0x00 << ISPRSZ_IN_START_HORZ_ST_SHIFT) |
(0x00 << ISPRSZ_IN_START_VERT_ST_SHIFT),
OMAP3_ISP_IOMEM_RESZ,
ISPRSZ_IN_START);
isp_reg_writel((ispres_obj.inputwidth << ISPRSZ_IN_SIZE_HORZ_SHIFT) |
(ispres_obj.inputheight <<
ISPRSZ_IN_SIZE_VERT_SHIFT),
OMAP3_ISP_IOMEM_RESZ,
ISPRSZ_IN_SIZE);
if (!ispres_obj.algo) {
isp_reg_writel((output_w << ISPRSZ_OUT_SIZE_HORZ_SHIFT) |
(output_h << ISPRSZ_OUT_SIZE_VERT_SHIFT),
OMAP3_ISP_IOMEM_RESZ,
ISPRSZ_OUT_SIZE);
} else {
isp_reg_writel(((output_w - 4) << ISPRSZ_OUT_SIZE_HORZ_SHIFT) |
(output_h << ISPRSZ_OUT_SIZE_VERT_SHIFT),
OMAP3_ISP_IOMEM_RESZ,
ISPRSZ_OUT_SIZE);
}
res = isp_reg_readl(OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT) &
~(ISPRSZ_CNT_HRSZ_MASK | ISPRSZ_CNT_VRSZ_MASK);
isp_reg_writel(res |
((ispres_obj.h_resz - 1) << ISPRSZ_CNT_HRSZ_SHIFT) |
((ispres_obj.v_resz - 1) << ISPRSZ_CNT_VRSZ_SHIFT),
OMAP3_ISP_IOMEM_RESZ,
ISPRSZ_CNT);
/* write filter coefficients */
/* why not call isp_write_filter_coefs() ? */
if (ispres_obj.h_resz <= MID_RESIZE_VALUE) {
j = 0;
for (i = 0; i < 16; i++) {
isp_reg_writel(
(ispres_obj.coeflist.h_filter_coef_4tap[j]
<< ISPRSZ_HFILT10_COEF0_SHIFT) |
(ispres_obj.coeflist.h_filter_coef_4tap[j + 1]
<< ISPRSZ_HFILT10_COEF1_SHIFT),
OMAP3_ISP_IOMEM_RESZ,
ISPRSZ_HFILT10 + (i * 0x04));
j += 2;
}
} else {
j = 0;
for (i = 0; i < 16; i++) {
if ((i + 1) % 4 == 0) {
isp_reg_writel((ispres_obj.coeflist.
h_filter_coef_7tap[j] <<
ISPRSZ_HFILT10_COEF0_SHIFT),
OMAP3_ISP_IOMEM_RESZ,
ISPRSZ_HFILT10 + (i * 0x04));
j += 1;
} else {
isp_reg_writel((ispres_obj.coeflist.
h_filter_coef_7tap[j] <<
ISPRSZ_HFILT10_COEF0_SHIFT) |
(ispres_obj.coeflist.
h_filter_coef_7tap[j+1] <<
ISPRSZ_HFILT10_COEF1_SHIFT),
OMAP3_ISP_IOMEM_RESZ,
ISPRSZ_HFILT10 + (i * 0x04));
j += 2;
}
}
}
if (ispres_obj.v_resz <= MID_RESIZE_VALUE) {
j = 0;
for (i = 0; i < 16; i++) {
isp_reg_writel((ispres_obj.coeflist.
v_filter_coef_4tap[j] <<
ISPRSZ_VFILT10_COEF0_SHIFT) |
(ispres_obj.coeflist.
v_filter_coef_4tap[j + 1] <<
ISPRSZ_VFILT10_COEF1_SHIFT),
OMAP3_ISP_IOMEM_RESZ,
ISPRSZ_VFILT10 + (i * 0x04));
j += 2;
}
} else {
j = 0;
for (i = 0; i < 16; i++) {
if ((i + 1) % 4 == 0) {
isp_reg_writel((ispres_obj.coeflist.
v_filter_coef_7tap[j] <<
ISPRSZ_VFILT10_COEF0_SHIFT),
OMAP3_ISP_IOMEM_RESZ,
ISPRSZ_VFILT10 + (i * 0x04));
j += 1;
} else {
isp_reg_writel((ispres_obj.coeflist.
v_filter_coef_7tap[j] <<
ISPRSZ_VFILT10_COEF0_SHIFT) |
(ispres_obj.coeflist.
v_filter_coef_7tap[j+1] <<
ISPRSZ_VFILT10_COEF1_SHIFT),
OMAP3_ISP_IOMEM_RESZ,
ISPRSZ_VFILT10 + (i * 0x04));
j += 2;
}
}
}
ispresizer_config_outlineoffset(output_w*2);
DPRINTK_ISPRESZ("ispresizer_config_size()-\n");
return 0;
}
int isp_resize_mem_data(struct isp_mem_resize_data *data)
{
int i;
int ret = -1;
struct isp_mem_resize_data *presizer_user = \
(struct isp_mem_resize_data *)data;
u32 input_buffer_size, output_buffer_size;
u32 input_nr_pages, output_nr_pages;
struct page **input_pages = NULL;
struct page **output_pages = NULL;
unsigned long isp_addr_in = 0;
unsigned long isp_addr_out = 0;
struct isp_mem_resize_data resizer_param;
unsigned long timeout;
if (presizer_user == NULL) {
printk(KERN_ERR "ISP_RESZ_ERR : Invalid user data\n");
return -EINVAL;
}
memcpy(&resizer_param, presizer_user, \
sizeof(struct isp_mem_resize_data));
DPRINTK_ISPPROC("\nRSZ input(%d-%d) - output(%d-%d)\n",
resizer_param.input_width,
resizer_param.input_height,
resizer_param.output_width,
resizer_param.output_height);
DPRINTK_ISPPROC("RSZ start(%d-%d) - end(%d-%d)\n",
resizer_param.left,
resizer_param.top,
resizer_param.crop_width,
resizer_param.crop_height);
if (presizer_user->datain == 0 || presizer_user->dataout == 0)
return -EINVAL;
ispresizer_enable(0);
timeout = jiffies + msecs_to_jiffies(200);
while (ispresizer_busy()) {
if (time_after(jiffies, timeout))
return -EINVAL;
msleep(1);
}
ispresizer_save_context();
ispresizer_free();
ispresizer_request();
/* set data path before configuring modules. */
ispresizer_config_datapath(RSZ_MEM_YUV, 0);
input_buffer_size = ALIGN_TO(presizer_user->input_width* \
presizer_user->input_height*2 , 0x100);
input_pages = map_user_memory_to_kernel(presizer_user->datain,
input_buffer_size, &input_nr_pages);
if (input_pages == NULL) {
ret = -EINVAL;
printk(KERN_ERR "ISP_RESZ_ERR: memory allocation failed\n");
goto exit_cleanup;
}
output_buffer_size = ALIGN_TO(presizer_user->output_width* \
presizer_user->output_height*2, 0x1000);
output_pages = map_user_memory_to_kernel(presizer_user->dataout,
output_buffer_size, &output_nr_pages);
if (output_pages == NULL) {
ret = -EINVAL;
printk(KERN_ERR "ISP_RESZ_ERR: memory allocation failed\n");
goto exit_cleanup;
}
for (i = 0; i < output_nr_pages; ++i)
flush_dcache_page(output_pages[i]);
isp_addr_in = ispmmu_vmap_pages(input_pages, input_nr_pages);
if (IS_ERR((void *)isp_addr_in)) {
isp_addr_in = 0;
ret = -EINVAL;
printk(KERN_ERR "ISP_RESZ_ERR: isp mmu map failed\n");
goto exit_cleanup;
}
isp_addr_out = ispmmu_vmap_pages(output_pages, output_nr_pages);
if (IS_ERR((void *)isp_addr_out)) {
isp_addr_out = 0;
ret = -EINVAL;
printk(KERN_ERR "ISP_RESZ_ERR: isp mmu map failed\n");
goto exit_cleanup;
}
if ((resizer_param.left == 0) && (resizer_param.top == 0)) {
ret = ispresizer_try_size(&resizer_param.input_width,
&resizer_param.input_height,
&resizer_param.output_width,
&resizer_param.output_height);
ret = ispresizer_config_size(resizer_param.input_width,
resizer_param.input_height,
resizer_param.output_width,
resizer_param.output_height);
ispresizer_set_inaddr(isp_addr_in);
} else {
ispresizer_trycrop(resizer_param.left,
resizer_param.top,
resizer_param.crop_width,
resizer_param.crop_height,
resizer_param.output_width,
resizer_param.output_height);
ispresizer_applycrop();
/*pixel alignment in 32bit space, vertical must be 0 per TRM */
isp_reg_writel(((resizer_param.left%16) <<
ISPRSZ_IN_START_HORZ_ST_SHIFT) |
(0 <<
ISPRSZ_IN_START_VERT_ST_SHIFT),
OMAP3_ISP_IOMEM_RESZ,
ISPRSZ_IN_START);
/* Align input address for cropping, per TRM */
ispresizer_set_inaddr(isp_addr_in +
(resizer_param.top*resizer_param.input_width*2)
+ ((resizer_param.left/16)*32));
}
ispresizer_set_inaddr(isp_addr_in);
ispresizer_set_outaddr(isp_addr_out);
ispresizer_config_ycpos(0);
ispresizer_config_inlineoffset(
ALIGN_TO(presizer_user->input_width*2, 32));
isp_set_callback(CBK_RESZ_DONE, rsz_isr, (void *) NULL, (void *)NULL);
isp_reg_writel(0xFFFFFFFF, OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS);
isp_wfc.done = 0;
/* start resizer engine. */
ispresizer_enable(1);
ret = wait_for_completion_timeout(&isp_wfc, msecs_to_jiffies(1000));
if (!ret)
ispresizer_enable(0);
timeout = jiffies + msecs_to_jiffies(50);
while (ispresizer_busy()) {
msleep(5);
if (time_after(jiffies, timeout)) {
printk(KERN_ERR "ISP_RESZ_ERR: Resizer still busy");
break;
}
}
isp_reg_writel(0xFFFFFFFF, OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS);
isp_unset_callback(CBK_RESZ_DONE);
ret = 0;
exit_cleanup:
ispresizer_restore_context();
if (isp_addr_in != 0)
ispmmu_vunmap(isp_addr_in);
if (isp_addr_out != 0)
ispmmu_vunmap(isp_addr_out);
if (input_pages != NULL) {
unmap_user_memory_from_kernel(input_pages, input_nr_pages);
kfree(input_pages);
}
if (output_pages != NULL) {
unmap_user_memory_from_kernel(output_pages, output_nr_pages);
kfree(output_pages);
}
DPRINTK_ISPPROC("resizer exit.\n");
return ret;
}
int isp_process_mem_data(struct isp_mem_data *data)
{
int i;
int ret = -1;
struct isp_mem_data *ppreview_user = \
(struct isp_mem_data *)data;
struct isp_mem_data preview_param;
u32 input_buffer_size, output_buffer_size;
u32 input_nr_pages, output_nr_pages;
struct page **input_pages = NULL;
struct page **output_pages = NULL;
unsigned long isp_addr_in = 0;
unsigned long isp_addr_out = 0;
unsigned long isp_addr_tmp = 0;
unsigned long timeout;
struct isp_mem_resize_data resizer_param;
u16 cropadjust = 0;
if (ppreview_user == NULL) {
printk(KERN_ERR "ISP_PROC_ERR: Invalid user data!\n");
return -EINVAL;
}
memcpy(&preview_param, ppreview_user, \
sizeof(struct isp_mem_data));
DPRINTK_ISPPROC("input(%d-%d) - output(%d-%d)\n",
preview_param.input_width,
preview_param.input_height,
preview_param.output_width,
preview_param.output_height);
DPRINTK_ISPPROC("start(%d-%d) - end(%d-%d)\n",
preview_param.left,
preview_param.top,
preview_param.crop_width,
preview_param.crop_height);
if (ppreview_user->datain == 0 || ppreview_user->dataout == 0)
return -EINVAL;
isppreview_enable(0);
ispresizer_enable(0);
timeout = jiffies + msecs_to_jiffies(200);
while (isppreview_busy() ||
ispresizer_busy()) {
if (time_after(jiffies, timeout))
return -EINVAL;
msleep(1);
}
isppreview_save_context();
ispresizer_save_context();
isppreview_free();
ispresizer_free();
isppreview_request();
ispresizer_request();
/* set data path before configuring modules. */
isppreview_update_datapath(PRV_RAW_MEM, PREVIEW_MEM);
ispresizer_config_datapath(RSZ_MEM_YUV, 0);
ret = isppreview_try_size(preview_param.input_width,
preview_param.input_height,
&preview_param.output_width,
&preview_param.output_height);
if (ret < 0)
goto exit_cleanup;
ret = isppreview_config_size(preview_param.input_width,
preview_param.input_height,
preview_param.output_width,
preview_param.output_height);
if (ret < 0)
goto exit_cleanup;
input_buffer_size = ALIGN_TO(ppreview_user->input_width* \
ppreview_user->input_height*2 , 0x100);
input_pages = map_user_memory_to_kernel(preview_param.datain,
input_buffer_size, &input_nr_pages);
if (input_pages == NULL) {
ret = -EINVAL;
printk(KERN_ERR "ISP_PROC_ERR: memory allocation failed\n");
goto exit_cleanup;
}
output_buffer_size = ALIGN_TO(ppreview_user->output_width* \
ppreview_user->output_height*2, 0x1000);
output_pages = map_user_memory_to_kernel(preview_param.dataout,
output_buffer_size, &output_nr_pages);
if (output_pages == NULL) {
ret = -EINVAL;
printk(KERN_ERR "ISP_PROC_ERR: memory allocation failed\n");
goto exit_cleanup;
}
for (i = 0; i < output_nr_pages; ++i)
flush_dcache_page(output_pages[i]);
isp_addr_in = ispmmu_vmap_pages(input_pages, input_nr_pages);
if (IS_ERR((void *)isp_addr_in)) {
isp_addr_in = 0;
ret = -EINVAL;
printk(KERN_ERR "ISP_PROC_ERR: isp mmu map failed\n");
goto exit_cleanup;
}
isp_addr_out = ispmmu_vmap_pages(output_pages, output_nr_pages);
if (IS_ERR((void *)isp_addr_out)) {
isp_addr_out = 0;
ret = -EINVAL;
printk(KERN_ERR "ISP_PROC_ERR: isp mmu map failed\n");
goto exit_cleanup;
}
/* This buffer must be allocated and mapped to
the ISP MMU previously. */
isp_addr_tmp = isp_tmp_buf_addr();
if (isp_addr_tmp == 0) {
printk(KERN_ERR "ISP_PROC_ERR: Invalid isp tmp buffer address!\n");
goto exit_cleanup;
}
isppreview_config_inlineoffset(ppreview_user->input_width * 2);
isppreview_set_inaddr(isp_addr_in);
isppreview_set_outaddr(isp_addr_tmp);
resizer_param.input_width = preview_param.output_width;
resizer_param.input_height = preview_param.output_height;
resizer_param.output_width = ppreview_user->output_width;
resizer_param.output_height = ppreview_user->output_height;
if ((preview_param.left == 0) && (preview_param.top == 0)) {
ret = ispresizer_try_size(&resizer_param.input_width,
&resizer_param.input_height,
&resizer_param.output_width,
&resizer_param.output_height);
if (ret < 0)
goto exit_cleanup;
ret = ispresizer_config_size(resizer_param.input_width,
resizer_param.input_height,
resizer_param.output_width,
resizer_param.output_height);
if (ret < 0)
goto exit_cleanup;
ispresizer_set_inaddr(isp_addr_tmp);
} else {
ispresizer_trycrop(preview_param.left,
preview_param.top,
preview_param.crop_width,
preview_param.crop_height,
resizer_param.output_width,
resizer_param.output_height);
ispresizer_applycrop();
/* account for pixel loss when using crop*/
if ((preview_param.input_height > preview_param.output_height)
&& (preview_param.top > 16))
cropadjust = 8;
else
cropadjust = 0;
/* pixel alignment in 32bit space, vertical must be 0 per TRM */
isp_reg_writel(((preview_param.left%16) <<
ISPRSZ_IN_START_HORZ_ST_SHIFT) |
(0 <<
ISPRSZ_IN_START_VERT_ST_SHIFT),
OMAP3_ISP_IOMEM_RESZ,
ISPRSZ_IN_START);
/* Align input address for cropping, per TRM */
ispresizer_set_inaddr(isp_addr_tmp -
(resizer_param.input_width*2*cropadjust) +
(preview_param.top*resizer_param.input_width*2)
+ ((preview_param.left/16)*32));
}
ispresizer_set_outaddr(isp_addr_out);
ispresizer_config_inlineoffset(
ALIGN_TO(resizer_param.input_width*2, 32));
if (isp_set_callback(CBK_PREV_DONE, prv_isr,
(void *) NULL, (void *)NULL) != 0) {
printk(KERN_ERR "ISP_PROC_ERR: Error setting PRV callback.\n");
goto exit_cleanup;
}
if (isp_set_callback(CBK_RESZ_DONE, rsz_isr,
(void *) NULL, (void *)NULL) != 0) {
printk(KERN_ERR "ISP_PROC_ERR: Error setting RSZ callback.\n");
goto exit_cleanup;
}
isp_reg_writel(0xFFFFFFFF, OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS);
isp_wfc.done = 0;
/* start preview engine. */
isppreview_enable(1);
ret = wait_for_completion_timeout(&isp_wfc, msecs_to_jiffies(1000));
if (!ret) {
isppreview_enable(0);
ispresizer_enable(0);
}
timeout = jiffies + msecs_to_jiffies(50);
while (ispresizer_busy()) {
msleep(5);
if (time_after(jiffies, timeout)) {
printk(KERN_ERR "ISP_RESZ_ERR: Resizer still busy");
break;
}
}
isp_reg_writel(0xFFFFFFFF, OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS);
isp_unset_callback(CBK_PREV_DONE);
isp_unset_callback(CBK_RESZ_DONE);
exit_cleanup:
isppreview_restore_context();
ispresizer_restore_context();
if (isp_addr_in != 0)
ispmmu_vunmap(isp_addr_in);
if (isp_addr_out != 0)
ispmmu_vunmap(isp_addr_out);
if (input_pages != NULL) {
unmap_user_memory_from_kernel(input_pages, input_nr_pages);
kfree(input_pages);
}
if (output_pages != NULL) {
unmap_user_memory_from_kernel(output_pages, output_nr_pages);
kfree(output_pages);
}
DPRINTK_ISPPROC("exit.\n");
return ret;
}
