Strip trailing whitespace from source files

Performed with: `git ls-files | xargs perl -i -p -e 's{[ \t]+$}{}'`

`git diff -w` & `git diff -b` show no diffs from this change

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Part-of: <https://gitlab.freedesktop.org/xorg/driver/xf86-video-ati/-/merge_requests/32>

.gitignore

@@ -66,8 +66,8 @@ core
 *.tar.bz2
 *.tar.gz
 #
-#		Add & Override patterns for xf86-video-ati 
+#		Add & Override patterns for xf86-video-ati
 #
 #		Edit the following section as needed
 # For example, !report.pc overrides *.pc. See 'man gitignore'
-# 
+#

configure.ac

@@ -242,7 +242,7 @@ b = bswap16(a);
     	if test "$SYS_ENDIAN_BSWAP" = "yes" ; then
 		USE_SYS_ENDIAN_H=yes
 		BSWAP=bswap
-	else	
+	else
 	    	if test "$SYS_ENDIAN__SWAP" = "yes" ; then
 			USE_SYS_ENDIAN_H=yes
 			BSWAP=__swap
@@ -252,13 +252,13 @@ b = bswap16(a);
 	fi
 
 	if test "$USE_SYS_ENDIAN_H" = "yes" ; then
-	    AC_DEFINE([USE_SYS_ENDIAN_H], 1, 
+	    AC_DEFINE([USE_SYS_ENDIAN_H], 1,
 		[Define to use byteswap macros from <sys/endian.h>])
-	    AC_DEFINE_UNQUOTED([radeon_bswap_16], ${BSWAP}16, 
+	    AC_DEFINE_UNQUOTED([radeon_bswap_16], ${BSWAP}16,
 			[Define to 16-bit byteswap macro])
-	    AC_DEFINE_UNQUOTED([radeon_bswap_32], ${BSWAP}32, 
+	    AC_DEFINE_UNQUOTED([radeon_bswap_32], ${BSWAP}32,
 			[Define to 32-bit byteswap macro])
-	    AC_DEFINE_UNQUOTED([radeon_bswap_64], ${BSWAP}64, 
+	    AC_DEFINE_UNQUOTED([radeon_bswap_64], ${BSWAP}64,
 			[Define to 64-bit byteswap macro])
 	fi
 fi

man/Makefile.am

@@ -19,7 +19,7 @@
 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 # DEALINGS IN THE SOFTWARE.
-# 
+#
 
 drivermandir = $(DRIVER_MAN_DIR)
 

src/atipcirename.h

@@ -31,7 +31,7 @@
 
 enum region_type {
     REGION_MEM,
-    REGION_IO 
+    REGION_IO
 };
 
 typedef struct pci_device *pciVideoPtr;

src/drmmode_display.c

@@ -574,7 +574,7 @@ drmmode_crtc_scanout_create(xf86CrtcPtr crtc, struct drmmode_scanout *scanout,
 		scanout->height = height;
 	} else {
 		ErrorF("failed to create CRTC scanout FB\n");
-error:		
+error:
 		drmmode_crtc_scanout_destroy(drmmode, scanout);
 	}
 
@@ -745,7 +745,7 @@ drmmode_crtc_prime_scanout_update(xf86CrtcPtr crtc, DisplayModePtr mode,
 	*x = *y = 0;
 	drmmode_crtc->scanout_id = scanout_id;
 }
-	
+
 
 static void
 drmmode_crtc_scanout_update(xf86CrtcPtr crtc, DisplayModePtr mode,
@@ -1813,7 +1813,7 @@ drmmode_output_create_resources(xf86OutputPtr output)
     drmmode_output->props = calloc(mode_output->count_props + 1, sizeof(drmmode_prop_rec));
     if (!drmmode_output->props)
 	return;
-    
+
     drmmode_output->num_props = 0;
     for (i = 0, j = 0; i < mode_output->count_props; i++) {
 	drmmode_prop = drmModeGetProperty(pRADEONEnt->fd, mode_output->props[i]);
@@ -2227,7 +2227,7 @@ drmmode_output_init(ScrnInfoPtr pScrn, drmmode_ptr drmmode, drmModeResPtr mode_r
 #if XF86_CRTC_VERSION >= 8
 	output->non_desktop = nonDesktop;
 #endif
-	
+
 	output->possible_crtcs = 0xffffffff;
 	for (i = 0; i < koutput->count_encoders; i++) {
 		output->possible_crtcs &= kencoders[i]->possible_crtcs;
@@ -2271,7 +2271,7 @@ uint32_t find_clones(ScrnInfoPtr scrn, xf86OutputPtr output)
 		clone_drmout = clone_output->driver_private;
 		if (output == clone_output)
 			continue;
-		
+
 		if (clone_drmout->enc_mask == 0)
 			continue;
 		if (drmmode_output->enc_clone_mask == clone_drmout->enc_mask)
@@ -2737,7 +2737,7 @@ drm_wakeup_handler(pointer data, int err, pointer p)
 {
 	drmmode_ptr drmmode = data;
 	RADEONEntPtr pRADEONEnt = RADEONEntPriv(drmmode->scrn);
-	
+
 #if !HAVE_NOTIFY_FD
 	fd_set *read_mask = p;
 
@@ -3050,7 +3050,7 @@ miPointerSpriteFuncRec drmmode_sprite_funcs = {
 	.DeviceCursorCleanup = drmmode_sprite_device_cursor_cleanup,
 };
 
-	
+
 void drmmode_adjust_frame(ScrnInfoPtr pScrn, drmmode_ptr drmmode, int x, int y)
 {
 	xf86CrtcConfigPtr	config = XF86_CRTC_CONFIG_PTR(pScrn);

src/evergreen_exa.c

@@ -2072,7 +2072,7 @@ EVERGREENDrawInit(ScreenPtr pScreen)
     info->accel_state->exa->UploadToScreen = EVERGREENUploadToScreen;
     info->accel_state->exa->DownloadFromScreen = EVERGREENDownloadFromScreen;
     info->accel_state->exa->CreatePixmap2 = RADEONEXACreatePixmap2;
-    info->accel_state->exa->SharePixmapBacking = RADEONEXASharePixmapBacking; 
+    info->accel_state->exa->SharePixmapBacking = RADEONEXASharePixmapBacking;
     info->accel_state->exa->SetSharedPixmapBacking = RADEONEXASetSharedPixmapBacking;
     info->accel_state->exa->flags = EXA_OFFSCREEN_PIXMAPS | EXA_SUPPORTS_PREPARE_AUX |
 	EXA_HANDLES_PIXMAPS | EXA_MIXED_PIXMAPS;

src/pcidb/parse_pci_ids.pl

@@ -48,7 +48,7 @@ while (<CSV>) {
 
       if (($columns[2] ne "R128") && ($columns[2] ne "MACH64") && ($columns[2] ne "MACH32")) {
 	print PCICHIPSET " { PCI_CHIP_$columns[1], PCI_CHIP_$columns[1], RES_SHARED_VGA },\n";
-	
+
 	print PCIDEVICEMATCH " ATI_DEVICE_MATCH( PCI_CHIP_$columns[1], 0 ),\n";
 
 	print RADEONCHIPSET "  { PCI_CHIP_$columns[1], \"$columns[8]\" },\n";

src/r600_exa.c

@@ -577,7 +577,7 @@ R600PrepareCopy(PixmapPtr pSrc,   PixmapPtr pDst,
 						   0);
 	if (!accel_state->copy_area_bo)
 	    RADEON_FALLBACK(("temp copy surface alloc failed\n"));
-	
+
 	radeon_cs_space_add_persistent_bo(info->cs, accel_state->copy_area_bo,
 					  0, RADEON_GEM_DOMAIN_VRAM);
 	if (radeon_cs_space_check(info->cs)) {
@@ -2051,7 +2051,7 @@ R600DrawInit(ScreenPtr pScreen)
     info->accel_state->exa->UploadToScreen = R600UploadToScreenCS;
     info->accel_state->exa->DownloadFromScreen = R600DownloadFromScreenCS;
     info->accel_state->exa->CreatePixmap2 = RADEONEXACreatePixmap2;
-    info->accel_state->exa->SharePixmapBacking = RADEONEXASharePixmapBacking; 
+    info->accel_state->exa->SharePixmapBacking = RADEONEXASharePixmapBacking;
     info->accel_state->exa->SetSharedPixmapBacking = RADEONEXASetSharedPixmapBacking;
     info->accel_state->exa->flags = EXA_OFFSCREEN_PIXMAPS | EXA_SUPPORTS_PREPARE_AUX |
 	EXA_HANDLES_PIXMAPS | EXA_MIXED_PIXMAPS;

src/r600_shader.c

@@ -455,13 +455,13 @@ int R600_copy_ps(RADEONChipFamily ChipSet, uint32_t* shader)
 
 /*
  * ; xv vertex shader
- * 00 VTX: ADDR(4) CNT(2) 
- *       0  VFETCH R1.xy01, R0.x, fc0  MEGA(16) FORMAT(32_32_FLOAT) 
- *          FORMAT_COMP(SIGNED) 
- *       1  VFETCH R0.xy01, R0.x, fc0  MINI(8) OFFSET(8) FORMAT(32_32_FLOAT) 
- *          FORMAT_COMP(SIGNED) 
+ * 00 VTX: ADDR(4) CNT(2)
+ *       0  VFETCH R1.xy01, R0.x, fc0  MEGA(16) FORMAT(32_32_FLOAT)
+ *          FORMAT_COMP(SIGNED)
+ *       1  VFETCH R0.xy01, R0.x, fc0  MINI(8) OFFSET(8) FORMAT(32_32_FLOAT)
+ *          FORMAT_COMP(SIGNED)
  * 01 EXP_DONE: POS0, R1
- * 02 EXP_DONE: PARAM0, R0  NO_BARRIER 
+ * 02 EXP_DONE: PARAM0, R0  NO_BARRIER
  * END_OF_PROGRAM
  */
 int R600_xv_vs(RADEONChipFamily ChipSet, uint32_t* shader)

src/radeon.h

@@ -137,7 +137,7 @@ RegionDuplicate(RegionPtr pOld)
 #define radeon_bswap_32(value) \
         (((uint32_t)radeon_bswap_16((uint16_t)((value) & 0xffff)) << 16) | \
         (uint32_t)radeon_bswap_16((uint16_t)((value) >> 16)))
- 
+
 #define radeon_bswap_64(value) \
         (((uint64_t)radeon_bswap_32((uint32_t)((value) & 0xffffffff)) \
             << 32) | \
@@ -364,7 +364,7 @@ struct radeon_2d_state {
     struct radeon_bo *dst_bo;
     struct radeon_bo *src_bo;
 };
-    
+
 #define DMA_BO_FREE_TIME 1000
 
 struct radeon_dma_bo {
@@ -569,7 +569,7 @@ typedef struct {
     Bool              r600_shadow_fb;
     void *fb_shadow;
 
-    void (*reemit_current2d)(ScrnInfoPtr pScrn, int op); // emit the current 2D state into the IB 
+    void (*reemit_current2d)(ScrnInfoPtr pScrn, int op); // emit the current 2D state into the IB
     struct radeon_2d_state state_2d;
     struct radeon_buffer *front_buffer;
     struct radeon_bo_manager *bufmgr;
@@ -885,7 +885,7 @@ radeon_pixmap_get_fb(PixmapPtr pix)
 
     if (fb_ptr && *fb_ptr)
 	return *fb_ptr;
-	
+
     if (radeon_get_pixmap_handle(pix, &handle)) {
 	ScrnInfoPtr scrn = xf86ScreenToScrn(pix->drawable.pScreen);
 	RADEONEntPtr pRADEONEnt = RADEONEntPriv(scrn);

src/radeon_accel.c

@@ -984,7 +984,7 @@ void RADEONWaitForVLine(ScrnInfoPtr pScrn, PixmapPtr pPix,
     }
     OUT_RING_REG(RADEON_WAIT_UNTIL, (RADEON_WAIT_CRTC_VLINE |
 				      RADEON_ENG_DISPLAY_SELECT_CRTC0));
-    
+
     OUT_RING(CP_PACKET3(RADEON_CP_PACKET3_NOP, 0));
     OUT_RING(drmmode_crtc->mode_crtc->crtc_id);
     ADVANCE_RING();

src/radeon_dri2.c

@@ -1,5 +1,5 @@
 /*
- * Copyright 2008 Kristian Høgsberg 
+ * Copyright 2008 Kristian Høgsberg
  * Copyright 2008 Jérôme Glisse
  *
  * All Rights Reserved.
@@ -195,7 +195,7 @@ radeon_dri2_create_buffer2(ScreenPtr pScreen,
 		flags = RADEON_CREATE_PIXMAP_TILING_MACRO | RADEON_CREATE_PIXMAP_TILING_MICRO;
 	    if (IS_R200_3D || info->ChipFamily == CHIP_FAMILY_RV200 || info->ChipFamily == CHIP_FAMILY_RADEON)
 		flags |= RADEON_CREATE_PIXMAP_DEPTH;
-		
+
 	    break;
 	case DRI2BufferBackLeft:
 	case DRI2BufferBackRight:
@@ -289,7 +289,7 @@ radeon_dri2_destroy_buffer2(ScreenPtr pScreen,
         if (private->refcnt == 0) {
             ScrnInfoPtr scrn = xf86ScreenToScrn(pScreen);
 
-            xf86DrvMsg(scrn->scrnIndex, X_WARNING, 
+            xf86DrvMsg(scrn->scrnIndex, X_WARNING,
                        "Attempted to destroy previously destroyed buffer.\
  This is a programming error\n");
             return;
@@ -376,7 +376,7 @@ radeon_dri2_copy_region2(ScreenPtr pScreen,
     ValidateGC(dst_drawable, gc);
 
     vsync = info->accel_state->vsync;
-    /* Driver option "SwapbuffersWait" defines if we vsync DRI2 copy-swaps. */ 
+    /* Driver option "SwapbuffersWait" defines if we vsync DRI2 copy-swaps. */
     info->accel_state->vsync = info->swapBuffersWait;
     info->accel_state->force = TRUE;
 
@@ -1204,7 +1204,7 @@ static int radeon_dri2_schedule_swap(ClientPtr client, DrawablePtr draw,
 
     /* radeon_dri2_frame_event_handler will get called some unknown time in the
      * future with these buffers.  Take a reference to ensure that they won't
-     * get destroyed before then. 
+     * get destroyed before then.
      */
     radeon_dri2_ref_buffer(front);
     radeon_dri2_ref_buffer(back);

src/radeon_exa.c

@@ -207,7 +207,7 @@ Bool RADEONPrepareAccess_CS(PixmapPtr pPix, int index)
 
     if (flush)
         radeon_cs_flush_indirect(pScrn);
-    
+
     /* flush IB */
     ret = radeon_bo_map(driver_priv->bo->bo.radeon, 1);
     if (ret) {

src/radeon_exa_funcs.c

@@ -646,7 +646,7 @@ Bool RADEONDrawInit(ScreenPtr pScreen)
     info->accel_state->exa->PrepareAccess = RADEONPrepareAccess_CS;
     info->accel_state->exa->FinishAccess = RADEONFinishAccess_CS;
     info->accel_state->exa->CreatePixmap2 = RADEONEXACreatePixmap2;
-    info->accel_state->exa->SharePixmapBacking = RADEONEXASharePixmapBacking; 
+    info->accel_state->exa->SharePixmapBacking = RADEONEXASharePixmapBacking;
     info->accel_state->exa->SetSharedPixmapBacking = RADEONEXASetSharedPixmapBacking;
 
 

src/radeon_exa_render.c

@@ -264,13 +264,13 @@ static Bool RADEONSetupSourceTile(PicturePtr pPict,
 
     info->accel_state->need_src_tile_x = info->accel_state->need_src_tile_y = FALSE;
     info->accel_state->src_tile_width = info->accel_state->src_tile_height = 65536; /* "infinite" */
-	    
+
     if (repeatType == RepeatNormal || repeatType == RepeatReflect) {
 	Bool badPitch = needMatchingPitch && !RADEONPitchMatches(pPix);
-	
+
 	int w = pPict->pDrawable ? pPict->pDrawable->width : 1;
 	int h = pPict->pDrawable ? pPict->pDrawable->height : 1;
-	
+
 	if (pPict->transform) {
 	    if (badPitch)
 		RADEON_FALLBACK(("Width %d and pitch %u not compatible for repeat\n",
@@ -1217,7 +1217,7 @@ static Bool R300TextureSetup(PicturePtr pPict, PixmapPtr pPix,
 	    txfilter |= R300_TX_CLAMP_S(R300_TX_CLAMP_WRAP);
 	else
 	    txfilter |= R300_TX_CLAMP_S(R300_TX_CLAMP_CLAMP_GL);
-	
+
 	if (unit != 0 || !info->accel_state->need_src_tile_y)
 	    txfilter |= R300_TX_CLAMP_T(R300_TX_CLAMP_WRAP);
 	else
@@ -2073,7 +2073,7 @@ static Bool R300PrepareComposite(int op, PicturePtr pSrcPicture,
     }
     ADVANCE_RING();
 
-    
+
     BEGIN_ACCEL_RELOC(3, 2);
     EMIT_WRITE_OFFSET(R300_RB3D_COLOROFFSET0, 0, pDst);
     EMIT_COLORPITCH(R300_RB3D_COLORPITCH0, colorpitch, pDst);
@@ -2390,7 +2390,7 @@ static void RadeonComposite(PixmapPtr pDst,
 	int remainingWidth = width;
 	int tileSrcX, tileMaskX, tileDstX;
 	int h = info->accel_state->src_tile_height - tileSrcY;
-	
+
 	if (h > remainingHeight)
 	    h = remainingHeight;
 	remainingHeight -= h;
@@ -2398,13 +2398,13 @@ static void RadeonComposite(PixmapPtr pDst,
 	modulus(srcX, info->accel_state->src_tile_width, tileSrcX);
 	tileMaskX = maskX;
 	tileDstX = dstX;
-	
+
 	while (remainingWidth > 0) {
 	    int w = info->accel_state->src_tile_width - tileSrcX;
 	    if (w > remainingWidth)
 		w = remainingWidth;
 	    remainingWidth -= w;
-	    
+
 	    RadeonCompositeTile(pScrn,
 					   info,
 					   pDst,
@@ -2412,7 +2412,7 @@ static void RadeonComposite(PixmapPtr pDst,
 					   tileMaskX, tileMaskY,
 					   tileDstX, tileDstY,
 					   w, h);
-	    
+
 	    tileSrcX = 0;
 	    tileMaskX += w;
 	    tileDstX += w;

src/radeon_kms.c

@@ -300,7 +300,7 @@ radeon_event_callback(CallbackListPtr *list,
      */
     client_priv->needs_flush = info->gpu_flushed;
     server_priv->needs_flush = info->gpu_flushed;
-    
+
     for (i = 0; i < eventinfo->count; i++) {
 	if (eventinfo->events[i].u.u.type == info->callback_event_type) {
 	    client_priv->needs_flush++;
@@ -846,7 +846,7 @@ radeon_prime_scanout_flip(PixmapDirtyUpdatePtr ent)
 		   "Failed to get FB for PRIME flip.\n");
 	return;
     }
-	
+
     drm_queue_seq = radeon_drm_queue_alloc(crtc,
 					   RADEON_DRM_QUEUE_CLIENT_DEFAULT,
 					   RADEON_DRM_QUEUE_ID_DEFAULT, fb,
@@ -1782,7 +1782,7 @@ Bool RADEONPreInit_KMS(ScrnInfoPtr pScrn, int flags)
 		   (unsigned)ARRAY_SIZE(pRADEONEnt->scrn));
 	return FALSE;
     }
-    
+
     if (!RADEONGetRec(pScrn)) return FALSE;
 
     info               = RADEONPTR(pScrn);
@@ -2328,7 +2328,7 @@ Bool RADEONScreenInit_KMS(ScreenPtr pScreen, int argc, char **argv)
     }
 
     radeon_cs_set_limit(info->cs, RADEON_GEM_DOMAIN_GTT, info->gart_size);
-    radeon_cs_space_set_flush(info->cs, (void(*)(void *))radeon_cs_flush_indirect, pScrn); 
+    radeon_cs_space_set_flush(info->cs, (void(*)(void *))radeon_cs_flush_indirect, pScrn);
 
     if (!radeon_setup_kernel_mem(pScreen)) {
 	xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "radeon_setup_kernel_mem failed\n");

src/radeon_reg.h

@@ -2304,7 +2304,7 @@
 #       define RADEON_ROUND_PREC_8TH_PIX     (1 << 30)
 #       define RADEON_ROUND_PREC_4TH_PIX     (2 << 30)
 #       define RADEON_ROUND_PREC_HALF_PIX    (3 << 30)
-#define R200_RE_CNTL				0x1c50 
+#define R200_RE_CNTL				0x1c50
 #       define R200_STIPPLE_ENABLE		0x1
 #       define R200_SCISSOR_ENABLE		0x2
 #       define R200_PATTERN_ENABLE		0x4
@@ -2596,7 +2596,7 @@
 #       define RADEON_VF_NUM_VERTICES_SHIFT           16
 
 #define RADEON_SE_PORT_DATA0			0x2000
- 
+
 #define R200_SE_VAP_CNTL			0x2080
 #       define R200_VAP_TCL_ENABLE		0x00000001
 #       define R200_VAP_SINGLE_BUF_STATE_ENABLE	0x00000010
@@ -2630,7 +2630,7 @@
 #       define R200_SCISSOR_ENABLE_0		0x10000000
 #       define R200_SCISSOR_ENABLE_1		0x20000000
 #       define R200_SCISSOR_ENABLE_2		0x40000000
-#define R200_PP_TXFILTER_0			0x2c00 
+#define R200_PP_TXFILTER_0			0x2c00
 #define R200_PP_TXFILTER_1			0x2c20
 #define R200_PP_TXFILTER_2			0x2c40
 #define R200_PP_TXFILTER_3			0x2c60
@@ -3856,7 +3856,7 @@
 # define AVIVO_DACB_POWERDOWN_POWERDOWN                         (1 << 0)
 # define AVIVO_DACB_POWERDOWN_BLUE                              (1 << 8)
 # define AVIVO_DACB_POWERDOWN_GREEN                             (1 << 16)
-# define AVIVO_DACB_POWERDOWN_RED 
+# define AVIVO_DACB_POWERDOWN_RED
 
 #define AVIVO_TMDSA_CNTL                    0x7880
 #   define AVIVO_TMDSA_CNTL_ENABLE               (1 << 0)

src/radeon_textured_video.c

@@ -348,13 +348,13 @@ RADEONPutImageTextured(ScrnInfoPtr pScrn,
     nlines = ((y2 + 0xffff) >> 16) - top;
 
     pPriv->currentBuffer ^= 1;
-	
+
     src_bo = pPriv->src_bo[pPriv->currentBuffer];
 
     ret = radeon_bo_map(src_bo, 1);
     if (ret)
 	return BadAlloc;
-  
+
     pPriv->src_addr = src_bo->ptr;
     pPriv->src_pitch = dstPitch;
 

src/radeon_textured_videofuncs.c

@@ -2384,7 +2384,7 @@ R500PrepareTexturedVideo(ScrnInfoPtr pScrn, RADEONPortPrivPtr pPriv)
     if (pPriv->bicubic_enabled)
 	radeon_cs_space_add_persistent_bo(info->cs, info->bicubic_bo,
 					  RADEON_GEM_DOMAIN_GTT | RADEON_GEM_DOMAIN_VRAM, 0);
-    
+
     driver_priv = exaGetPixmapDriverPrivate(pPixmap);
     radeon_cs_space_add_persistent_bo(info->cs, driver_priv->bo->bo.radeon, 0,
 				      RADEON_GEM_DOMAIN_VRAM);

src/radeon_video.c

@@ -269,12 +269,12 @@ RADEONCopyMungedData(
 	    dst++; s2++; s3++;
 	    s1 += 2;
 	}
-	
+
 	dst1 += dstPitch;
 	src1 += srcPitch;
 	if( j & 1 ) {
 	    src2 += srcPitch2;
 	    src3 += srcPitch2;
-	}	
+	}
     }
 }

src/simple_list.h

@@ -4,7 +4,7 @@
  *
  *  Intended to work with a list sentinel which is created as an empty
  *  list.  Insert & delete are O(1).
- *  
+ *
  * \author
  *  (C) 1997, Keith Whitwell
  */
@@ -154,19 +154,19 @@ do {						\
 
 /**
  * Test whether element is at end of the list.
- * 
+ *
  * \param list list.
  * \param elem element.
- * 
+ *
  * \return non-zero if element is at end of list, or zero otherwise.
  */
 #define at_end(list, elem)     ((elem) == (list))
 
 /**
  * Test if a list is empty.
- * 
+ *
  * \param list list.
- * 
+ *
  * \return non-zero if list empty, or zero otherwise.
  */
 #define is_empty_list(list)    ((list)->next == (list))
@@ -188,7 +188,7 @@ do {						\
  *
  * Same as #foreach but lets you unlink the current value during a list
  * traversal.  Useful for freeing a list, element by element.
- * 
+ *
  * \param ptr pointer to the current element.
  * \param t temporary pointer.
  * \param list list.