tree: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-4.21 head: 2a22f1b30cee8d1e104a6c5062a609bedbfd5c39 commit: 2a22f1b30cee8d1e104a6c5062a609bedbfd5c39 [40/40] spi: npcm: add NPCM PSPI controller driver config: i386-allmodconfig (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: git checkout 2a22f1b30cee8d1e104a6c5062a609bedbfd5c39 # save the attached .config to linux build tree make ARCH=i386 Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings All warnings (new ones prefixed by >>): drivers/spi/spi-npcm-pspi.c: In function 'npcm_pspi_handler': >> drivers/spi/spi-npcm-pspi.c:226:17: warning: 'val' may be used uninitialized in this function [-Wmaybe-uninitialized] *priv->rx_buf = val; ~~~~~~~~~~~~~~^~~~~ drivers/spi/spi-npcm-pspi.c:215:6: note: 'val' was declared here u16 val; ^~~ vim +/val +226 drivers/spi/spi-npcm-pspi.c 211 212 static void npcm_pspi_recv(struct npcm_pspi *priv) 213 { 214 int rsize; 215 u16 val; 216 217 rsize = min(bytes_per_word(priv->bits_per_word), priv->rx_bytes); 218 priv->rx_bytes -= rsize; 219 220 if (priv->rx_buf) { 221 if (rsize == 1) 222 val = ioread8(priv->base + NPCM_PSPI_DATA); 223 if (rsize == 2) 224 val = ioread16(priv->base + NPCM_PSPI_DATA); 225 > 226 *priv->rx_buf = val; 227 priv->rx_buf += rsize; 228 } 229 } 230 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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