From b50e56d81e0df964e9b28001d792021b109cf4f1 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 12 Jan 2008 14:16:14 +0000 Subject: libata fixes for sparse-found problems In pata_legacy and pata_winbond we've got bugs - cpu_to_le16() instead of cpu_to_le32(). Fortunately, both affected suckers are VLB, thus l-e-only, so we might get away with that unless we hit it with slop == 3 (hadn't checked if playing with badly aligned sg could trigger that). Still buggy... Moreover, pata_legacy, pata_winbond and pata_qdi forgot to initialize pad on the write side of 32bit case in their ->data_xfer(). Hopefully the hardware does't care, but still, sending uninitialized data to it... Signed-off-by: Al Viro Signed-off-by: Jeff Garzik --- drivers/ata/pata_legacy.c | 8 +++----- drivers/ata/pata_qdi.c | 8 +++----- drivers/ata/pata_winbond.c | 8 +++----- 3 files changed, 9 insertions(+), 15 deletions(-) diff --git a/drivers/ata/pata_legacy.c b/drivers/ata/pata_legacy.c index 7bed8d80638..17159b5e1e4 100644 --- a/drivers/ata/pata_legacy.c +++ b/drivers/ata/pata_legacy.c @@ -271,14 +271,12 @@ static void pdc_data_xfer_vlb(struct ata_device *adev, unsigned char *buf, unsig ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); if (unlikely(slop)) { - u32 pad; + __le32 pad = 0; if (write_data) { memcpy(&pad, buf + buflen - slop, slop); - pad = le32_to_cpu(pad); - iowrite32(pad, ap->ioaddr.data_addr); + iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr); } else { - pad = ioread32(ap->ioaddr.data_addr); - pad = cpu_to_le16(pad); + pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr)); memcpy(buf + buflen - slop, &pad, slop); } } diff --git a/drivers/ata/pata_qdi.c b/drivers/ata/pata_qdi.c index 7d4c696c4cb..a4c0e502cb4 100644 --- a/drivers/ata/pata_qdi.c +++ b/drivers/ata/pata_qdi.c @@ -136,14 +136,12 @@ static void qdi_data_xfer(struct ata_device *adev, unsigned char *buf, unsigned ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); if (unlikely(slop)) { - u32 pad; + __le32 pad = 0; if (write_data) { memcpy(&pad, buf + buflen - slop, slop); - pad = le32_to_cpu(pad); - iowrite32(pad, ap->ioaddr.data_addr); + iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr); } else { - pad = ioread32(ap->ioaddr.data_addr); - pad = cpu_to_le32(pad); + pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr)); memcpy(buf + buflen - slop, &pad, slop); } } diff --git a/drivers/ata/pata_winbond.c b/drivers/ata/pata_winbond.c index 311cdb3a556..7116a9e7a8b 100644 --- a/drivers/ata/pata_winbond.c +++ b/drivers/ata/pata_winbond.c @@ -104,14 +104,12 @@ static void winbond_data_xfer(struct ata_device *adev, unsigned char *buf, unsig ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); if (unlikely(slop)) { - u32 pad; + __le32 pad = 0; if (write_data) { memcpy(&pad, buf + buflen - slop, slop); - pad = le32_to_cpu(pad); - iowrite32(pad, ap->ioaddr.data_addr); + iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr); } else { - pad = ioread32(ap->ioaddr.data_addr); - pad = cpu_to_le16(pad); + pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr)); memcpy(buf + buflen - slop, &pad, slop); } } -- cgit v1.2.3 From ed722d3d3eb2e9ea87d9f8109c291337e79d584a Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Thu, 10 Jan 2008 14:33:08 -0800 Subject: [libata] pata_bf54x: checkpatch fixes WARNING: line over 80 characters #36: FILE: drivers/ata/pata_bf54x.c:1512: + while (bfin_port_info[board_idx].udma_mask>0 && udma_fsclk[udma_mode] > fsclk) { ERROR: need spaces around that '>' (ctx:VxV) #36: FILE: drivers/ata/pata_bf54x.c:1512: + while (bfin_port_info[board_idx].udma_mask>0 && udma_fsclk[udma_mode] > fsclk) { ^ total: 1 errors, 1 warnings, 19 lines checked Your patch has style problems, please review. If any of these errors are false positives report them to the maintainer, see CHECKPATCH in MAINTAINERS. Please run checkpatch prior to sending patches Cc: Jeff Garzik Cc: Sonic Zhang Cc: Tejun Heo Cc: sonic zhang Signed-off-by: Andrew Morton Signed-off-by: Jeff Garzik --- drivers/ata/pata_bf54x.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/ata/pata_bf54x.c b/drivers/ata/pata_bf54x.c index 088a41f4e65..7842cc48735 100644 --- a/drivers/ata/pata_bf54x.c +++ b/drivers/ata/pata_bf54x.c @@ -1509,7 +1509,8 @@ static int __devinit bfin_atapi_probe(struct platform_device *pdev) if (res == NULL) return -EINVAL; - while (bfin_port_info[board_idx].udma_mask>0 && udma_fsclk[udma_mode] > fsclk) { + while (bfin_port_info[board_idx].udma_mask > 0 && + udma_fsclk[udma_mode] > fsclk) { udma_mode--; bfin_port_info[board_idx].udma_mask >>= 1; } -- cgit v1.2.3 From 0f7577434bcdf99456757b44d8911dc6e51c3178 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Thu, 10 Jan 2008 14:33:09 -0800 Subject: [libata] core checkpatch fix Cc: Alan Cox Cc: Jeff Garzik Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 4753a1831db..6380726f753 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -6998,7 +6998,9 @@ int ata_host_start(struct ata_host *host) rc = ap->ops->port_start(ap); if (rc) { if (rc != -ENODEV) - dev_printk(KERN_ERR, host->dev, "failed to start port %d (errno=%d)\n", i, rc); + dev_printk(KERN_ERR, host->dev, + "failed to start port %d " + "(errno=%d)\n", i, rc); goto err_out; } } -- cgit v1.2.3 From 121a09e590d54be840289c6feac840453aa999d9 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Mon, 14 Jan 2008 01:06:40 -0800 Subject: libata: correct handling of TSS DVD Devices that misreport the validity bit for word 93 look like SATA. If they are on the blacklist then we must not test for SATA but assume 40 wire in the 40 wire case (The TSSCorp reports 80 wire on SATA it seems!) Signed-off-by: Alan Cox Cc: Tejun Heo Cc: Jeff Garzik Signed-off-by: Andrew Morton Signed-off-by: Jeff Garzik --- include/linux/ata.h | 2 -- 1 file changed, 2 deletions(-) diff --git a/include/linux/ata.h b/include/linux/ata.h index 72ab80801ef..e672e80202a 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -554,8 +554,6 @@ static inline int ata_drive_40wire(const u16 *dev_id) static inline int ata_drive_40wire_relaxed(const u16 *dev_id) { - if (ata_id_is_sata(dev_id)) - return 0; /* SATA */ if ((dev_id[93] & 0x2000) == 0x2000) return 0; /* 80 wire */ return 1; -- cgit v1.2.3