From a6343afb6e16b65b9f0b264f94f8207212e7e3ae Mon Sep 17 00:00:00 2001 From: Jeff Garzik Date: Tue, 17 Jul 2007 05:39:58 -0400 Subject: drivers/*: mark variables with uninitialized_var() Mark variables in drivers/* with uninitialized_var() if such a warning appears, and analysis proves that the var is initialized properly on all paths it is used. Signed-off-by: Jeff Garzik --- drivers/atm/zatm.c | 4 +++- drivers/char/cyclades.c | 4 ++-- drivers/mtd/ubi/eba.c | 2 +- drivers/net/r8169.c | 2 +- drivers/net/tokenring/smctr.c | 6 ++++-- drivers/usb/misc/auerswald.c | 2 +- drivers/video/matrox/matroxfb_maven.c | 9 +++++++-- drivers/video/riva/riva_hw.c | 7 ++++++- 8 files changed, 25 insertions(+), 11 deletions(-) diff --git a/drivers/atm/zatm.c b/drivers/atm/zatm.c index 020a87a476c..58583c6ac5b 100644 --- a/drivers/atm/zatm.c +++ b/drivers/atm/zatm.c @@ -915,7 +915,7 @@ static int open_tx_first(struct atm_vcc *vcc) unsigned long flags; u32 *loop; unsigned short chan; - int pcr,unlimited; + int unlimited; DPRINTK("open_tx_first\n"); zatm_dev = ZATM_DEV(vcc->dev); @@ -936,6 +936,8 @@ static int open_tx_first(struct atm_vcc *vcc) vcc->qos.txtp.max_pcr >= ATM_OC3_PCR); if (unlimited && zatm_dev->ubr != -1) zatm_vcc->shaper = zatm_dev->ubr; else { + int uninitialized_var(pcr); + if (unlimited) vcc->qos.txtp.max_sdu = ATM_MAX_AAL5_PDU; if ((zatm_vcc->shaper = alloc_shaper(vcc->dev,&pcr, vcc->qos.txtp.min_pcr,vcc->qos.txtp.max_pcr,unlimited)) diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c index 7b0839426e1..9e0adfe27c1 100644 --- a/drivers/char/cyclades.c +++ b/drivers/char/cyclades.c @@ -4466,10 +4466,10 @@ static void cy_hangup(struct tty_struct *tty) static int __devinit cy_init_card(struct cyclades_card *cinfo) { struct cyclades_port *info; - u32 mailbox; + u32 uninitialized_var(mailbox); unsigned int nports; unsigned short chip_number; - int index, port; + int uninitialized_var(index), port; spin_lock_init(&cinfo->card_lock); diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c index 4dc10c8ab96..7c6b223b3f8 100644 --- a/drivers/mtd/ubi/eba.c +++ b/drivers/mtd/ubi/eba.c @@ -368,7 +368,7 @@ int ubi_eba_read_leb(struct ubi_device *ubi, int vol_id, int lnum, void *buf, int err, pnum, scrub = 0, idx = vol_id2idx(ubi, vol_id); struct ubi_vid_hdr *vid_hdr; struct ubi_volume *vol = ubi->volumes[idx]; - uint32_t crc; + uint32_t uninitialized_var(crc); err = leb_read_lock(ubi, vol_id, lnum); if (err) diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c index 982a9010c7a..bb6896ae315 100644 --- a/drivers/net/r8169.c +++ b/drivers/net/r8169.c @@ -2338,7 +2338,7 @@ static int rtl8169_xmit_frags(struct rtl8169_private *tp, struct sk_buff *skb, { struct skb_shared_info *info = skb_shinfo(skb); unsigned int cur_frag, entry; - struct TxDesc *txd; + struct TxDesc * uninitialized_var(txd); entry = tp->cur_tx; for (cur_frag = 0; cur_frag < info->nr_frags; cur_frag++) { diff --git a/drivers/net/tokenring/smctr.c b/drivers/net/tokenring/smctr.c index 58d7e5d452f..f83bb5cb0d3 100644 --- a/drivers/net/tokenring/smctr.c +++ b/drivers/net/tokenring/smctr.c @@ -3692,7 +3692,6 @@ static int smctr_process_rx_packet(MAC_HEADER *rmf, __u16 size, __u16 rcode, correlator; int err = 0; __u8 xframe = 1; - __u16 tx_fstatus; rmf->vl = SWAP_BYTES(rmf->vl); if(rx_status & FCB_RX_STATUS_DA_MATCHED) @@ -3783,7 +3782,9 @@ static int smctr_process_rx_packet(MAC_HEADER *rmf, __u16 size, } break; - case TX_FORWARD: + case TX_FORWARD: { + __u16 uninitialized_var(tx_fstatus); + if((rcode = smctr_rcv_tx_forward(dev, rmf)) != POSITIVE_ACK) { @@ -3811,6 +3812,7 @@ static int smctr_process_rx_packet(MAC_HEADER *rmf, __u16 size, } } break; + } /* Received MAC Frames Processed by CRS/REM/RPS. */ case RSP: diff --git a/drivers/usb/misc/auerswald.c b/drivers/usb/misc/auerswald.c index 3e22b2ff9e7..42d4e6454a7 100644 --- a/drivers/usb/misc/auerswald.c +++ b/drivers/usb/misc/auerswald.c @@ -664,7 +664,7 @@ static int auerchain_control_msg (pauerchain_t acp, struct usb_device *dev, unsi int ret; struct usb_ctrlrequest *dr; struct urb *urb; - int length; + int uninitialized_var(length); dbg ("auerchain_control_msg"); dr = kmalloc (sizeof (struct usb_ctrlrequest), GFP_KERNEL); diff --git a/drivers/video/matrox/matroxfb_maven.c b/drivers/video/matrox/matroxfb_maven.c index 5d29a26b8cd..de0d755f901 100644 --- a/drivers/video/matrox/matroxfb_maven.c +++ b/drivers/video/matrox/matroxfb_maven.c @@ -273,8 +273,11 @@ static int matroxfb_PLL_mavenclock(const struct matrox_pll_features2* pll, } } } + + /* if h2/post/in/feed have not been assigned, return zero (error) */ if (besth2 < 2) return 0; + dprintk(KERN_ERR "clk: %02X %02X %02X %d %d\n", *in, *feed, *post, fxtal, fwant); return fxtal * (*feed) / (*in) * ctl->den; } @@ -284,7 +287,7 @@ static unsigned int matroxfb_mavenclock(const struct matrox_pll_ctl* ctl, unsigned int* in, unsigned int* feed, unsigned int* post, unsigned int* htotal2) { unsigned int fvco; - unsigned int p; + unsigned int uninitialized_var(p); fvco = matroxfb_PLL_mavenclock(&maven1000_pll, ctl, htotal, vtotal, in, feed, &p, htotal2); if (!fvco) @@ -715,7 +718,9 @@ static int maven_find_exact_clocks(unsigned int ht, unsigned int vt, m->regs[0x82] = 0x81; for (x = 0; x < 8; x++) { - unsigned int a, b, c, h2; + unsigned int c; + unsigned int uninitialized_var(a), uninitialized_var(b), + uninitialized_var(h2); unsigned int h = ht + 2 + x; if (!matroxfb_mavenclock((m->mode == MATROXFB_OUTPUT_MODE_PAL) ? &maven_PAL : &maven_NTSC, h, vt, &a, &b, &c, &h2)) { diff --git a/drivers/video/riva/riva_hw.c b/drivers/video/riva/riva_hw.c index 70bfd78eca8..13307703a9f 100644 --- a/drivers/video/riva/riva_hw.c +++ b/drivers/video/riva/riva_hw.c @@ -1223,6 +1223,8 @@ static int CalcVClock } } } + + /* non-zero: M/N/P/clock values assigned. zero: error (not set) */ return (DeltaOld != 0xFFFFFFFF); } /* @@ -1240,7 +1242,10 @@ int CalcStateExt int dotClock ) { - int pixelDepth, VClk, m, n, p; + int pixelDepth; + int uninitialized_var(VClk),uninitialized_var(m), + uninitialized_var(n), uninitialized_var(p); + /* * Save mode parameters. */ -- cgit v1.2.3 From 8e1c091cccd551557d24ce845715e8ceb6c49d36 Mon Sep 17 00:00:00 2001 From: Jeff Garzik Date: Tue, 17 Jul 2007 05:40:59 -0400 Subject: arch/i386/* fs/* ipc/*: mark variables with uninitialized_var() Mark variables with uninitialized_var() if such a warning appears, and analysis proves that the var is initialized properly on all paths it is used. Signed-off-by: Jeff Garzik --- arch/i386/kernel/efi.c | 2 +- fs/ocfs2/file.c | 3 ++- fs/udf/super.c | 2 +- ipc/msg.c | 4 ++-- ipc/sem.c | 2 +- 5 files changed, 7 insertions(+), 6 deletions(-) diff --git a/arch/i386/kernel/efi.c b/arch/i386/kernel/efi.c index a1808022ea1..2452c6fbe99 100644 --- a/arch/i386/kernel/efi.c +++ b/arch/i386/kernel/efi.c @@ -278,7 +278,7 @@ void efi_memmap_walk(efi_freemem_callback_t callback, void *arg) struct range { unsigned long start; unsigned long end; - } prev, curr; + } uninitialized_var(prev), curr; efi_memory_desc_t *md; unsigned long start, end; void *p; diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index f04c7aa834c..004c2abbc73 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -1867,7 +1867,8 @@ static ssize_t ocfs2_file_buffered_write(struct file *file, loff_t *ppos, loff_t pos; const struct iovec *cur_iov = iov; struct page *user_page, *page; - char *buf, *dst; + char * uninitialized_var(buf); + char *dst; void *fsdata; /* diff --git a/fs/udf/super.c b/fs/udf/super.c index 6658afb41cc..d6a504f5d75 100644 --- a/fs/udf/super.c +++ b/fs/udf/super.c @@ -1356,7 +1356,7 @@ udf_load_partition(struct super_block *sb, kernel_lb_addr *fileset) case UDF_VIRTUAL_MAP15: case UDF_VIRTUAL_MAP20: { - kernel_lb_addr ino; + kernel_lb_addr uninitialized_var(ino); if (!UDF_SB_LASTBLOCK(sb)) { diff --git a/ipc/msg.c b/ipc/msg.c index cbd27e51994..a03fcb522ff 100644 --- a/ipc/msg.c +++ b/ipc/msg.c @@ -385,7 +385,7 @@ copy_msqid_from_user(struct msq_setbuf *out, void __user *buf, int version) asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf) { struct kern_ipc_perm *ipcp; - struct msq_setbuf setbuf; + struct msq_setbuf uninitialized_var(setbuf); struct msg_queue *msq; int err, version; struct ipc_namespace *ns; @@ -509,7 +509,7 @@ asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf) err = audit_ipc_obj(ipcp); if (err) goto out_unlock_up; - if (cmd==IPC_SET) { + if (cmd == IPC_SET) { err = audit_ipc_set_perm(setbuf.qbytes, setbuf.uid, setbuf.gid, setbuf.mode); if (err) diff --git a/ipc/sem.c b/ipc/sem.c index 89bfdffb38d..b676fef6d20 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -856,7 +856,7 @@ static int semctl_down(struct ipc_namespace *ns, int semid, int semnum, { struct sem_array *sma; int err; - struct sem_setbuf setbuf; + struct sem_setbuf uninitialized_var(setbuf); struct kern_ipc_perm *ipcp; if(cmd == IPC_SET) { -- cgit v1.2.3