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The qla4_83xx_rd_reg_indirect() function can fail when it is unable to read a register, but not all callers check its return value before using the register data, and gcc correctly warns about this: qla4xxx/ql4_83xx.c: In function 'qla4_83xx_process_reset_template': qla4xxx/ql4_83xx.c:1073:36: warning: 'value' may be used uninitialized in this function ha->reset_tmplt.array[index++] = value; ^ qla4xxx/ql4_83xx.c:1050:11: note: 'value' was declared here uint32_t value; ^ qla4xxx/ql4_83xx.c:902:8: warning: 'value' may be used uninitialized in this function value &= p_rmw_hdr->test_mask; ^ qla4xxx/ql4_83xx.c:895:11: note: 'value' was declared here uint32_t value; ^ In file included from ../include/linux/io.h:25:0, from ../include/linux/pci.h:31, from ../drivers/scsi/qla4xxx/ql4_def.h:16, from ../drivers/scsi/qla4xxx/ql4_83xx.c:10: asm/io.h:101:2: warning: 'value' may be used uninitialized in this function asm volatile("str %1, %0" ^ qla4xxx/ql4_83xx.c:874:11: note: 'value' was declared here uint32_t value; ^ Unfortunately, I don't see any helpful way to add proper error handling for this case, and the failure scenario for rd_reg seems rather obscure, so this bails out and makes the rd_reg accessor set the result to 0xffffffff so we at least get a predictable value. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Nilesh Javali <nilesh.javali@qlogic.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> |
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.. | ||
Kconfig | ||
Makefile | ||
ql4_83xx.c | ||
ql4_83xx.h | ||
ql4_attr.c | ||
ql4_bsg.c | ||
ql4_bsg.h | ||
ql4_dbg.c | ||
ql4_dbg.h | ||
ql4_def.h | ||
ql4_fw.h | ||
ql4_glbl.h | ||
ql4_init.c | ||
ql4_inline.h | ||
ql4_iocb.c | ||
ql4_isr.c | ||
ql4_mbx.c | ||
ql4_nvram.c | ||
ql4_nvram.h | ||
ql4_nx.c | ||
ql4_nx.h | ||
ql4_os.c | ||
ql4_version.h |