tree: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git topic/uniphier head: db4cb3d04eba91db48da0032c44b83ed7185973c commit: e98131222ff931a670739cede00d1fb9d6f83763 [6/7] ASoC: uniphier: add support for UniPhier AIO compress audio reproduce: # apt-get install sparse git checkout e98131222ff931a670739cede00d1fb9d6f83763 make ARCH=x86_64 allmodconfig make C=1 CF=-D__CHECK_ENDIAN__

sparse warnings: (new ones prefixed by >>)

...

sound/soc/uniphier/aio-compress.c:314:34: sparse: cast to restricted __be16 sound/soc/uniphier/aio-compress.c:314:34: sparse: cast to restricted __be16 sound/soc/uniphier/aio-compress.c:314:34: sparse: cast to restricted __be16 sound/soc/uniphier/aio-compress.c:314:34: sparse: cast to restricted __be16

vim +314 sound/soc/uniphier/aio-compress.c

290 291 static int aio_compr_send_to_hw(struct uniphier_aio_sub *sub, 292 char __user *buf, size_t dstsize) 293 { 294 u32 __user *srcbuf = (u32 __user *)buf; 295 u32 *dstbuf = (u32 *)(sub->compr_area + sub->wr_offs); 296 int src = 0, dst = 0, ret; 297 u32 frm, frm_a, frm_b; 298 299 while (dstsize > 0) { 300 ret = get_user(frm, srcbuf + src); 301 if (ret) 302 return ret; 303 src++; 304 305 frm_a = frm & 0xffff; 306 frm_b = (frm >> 16) & 0xffff; 307 308 if (frm == IEC61937_HEADER_SIGN) { 309 frm_a |= 0x01000000; 310 311 /* Next data is Pc and Pd */ 312 sub->iec_header = true; 313 } else {

314 u16 pc = be16_to_cpu((__be16)frm_a);

315 316 if (sub->iec_header && sub->iec_pc != pc) { 317 /* Force overwrite IEC frame type */ 318 sub->iec_pc = pc; 319 ret = aio_oport_set_stream_type(sub, pc); 320 if (ret) 321 return ret; 322 } 323 sub->iec_header = false; 324 } 325 dstbuf[dst++] = frm_a; 326 dstbuf[dst++] = frm_b; 327 328 dstsize -= sizeof(u32) * 2; 329 } 330 331 return 0; 332 } 333

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