#include #include #include #include #include "ioexact.h" extern volatile sig_atomic_t sigint; ssize_t read_exact(int fd, void *buf, size_t len, bool mayexit) { ssize_t num = 0, written; while (len > 0 && !sigint) { if ((written = read(fd, buf, len)) < 0) { if (errno == EAGAIN && num > 0) continue; if (mayexit) return -1; else continue; } if (!written) return 0; len -= written; buf += written; num += written; } return num; } ssize_t write_exact(int fd, void *buf, size_t len, bool mayexit) { ssize_t num = 0, written; while (len > 0 && !sigint) { if ((written = write(fd, buf, len)) < 0) { if (errno == EAGAIN && num > 0) continue; if (mayexit) return -1; else continue; } if (!written) return 0; len -= written; buf += written; num += written; } return num; } ut type='hidden' name='id' value='e58566b1b17fef5c4590e652a337afe66277131a'/> net-next plumbingsTobias Klauser
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authorTushar Dave <tushar.n.dave@oracle.com>2016-11-23 18:28:04 -0800
committerDavid S. Miller <davem@davemloft.net>2016-11-28 15:51:31 -0500
commite58566b1b17fef5c4590e652a337afe66277131a (patch)
tree7eeba8d7df82d8bb23cae90e06bd22460e070540
parent9dd35d6882a10629b95f2bc41a541740ef24c226 (diff)
qlogicpti: Fix compiler warnings
qlogicpti uses '__u32' for dma handle while invoking kernel DMA APIs, instead of using dma_addr_t. This hasn't caused any 'incompatible pointer type' warning on SPARC because until now dma_addr_t is of type u32. However, recent changes in SPARC ATU (iommu) enabled 64bit DMA and therefore dma_addr_t became of type u64. This makes 'incompatible pointer type' warnings inevitable. e.g. drivers/scsi/qlogicpti.c: In function ‘qpti_map_queues’: drivers/scsi/qlogicpti.c:813: warning: passing argument 3 of ‘dma_alloc_coherent’ from incompatible pointer type ./include/linux/dma-mapping.h:445: note: expected ‘dma_addr_t *’ but argument is of type ‘__u32 *’ drivers/scsi/qlogicpti.c:822: warning: passing argument 3 of ‘dma_alloc_coherent’ from incompatible pointer type ./include/linux/dma-mapping.h:445: note: expected ‘dma_addr_t *’ but argument is of type ‘__u32 *’ For the record, qlogicpti never executes on sun4v. Therefore even though 64bit DMA is enabled on SPARC, qlogicpti continues to use legacy iommu that guarantees DMA address is always in 32bit range. This patch resolves aforementioned compiler warnings. Signed-off-by: Tushar Dave <tushar.n.dave@oracle.com> Reviewed-by: thomas tai <thomas.tai@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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