From: Tilman Schmidt Date: Tue, 11 Apr 2006 05:55:11 +0000 (-0700) Subject: [PATCH] isdn4linux: Siemens Gigaset drivers: eliminate from_user argument X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=01371500b245ae63f542d74140a3d8ccb74d0318;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git [PATCH] isdn4linux: Siemens Gigaset drivers: eliminate from_user argument With Hansjoerg Lipp Eliminate the from_user argument from a debugging function, thus easing the job of sparse. Signed-off-by: Hansjoerg Lipp Signed-off-by: Tilman Schmidt Cc: Karsten Keil Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/isdn/gigaset/asyncdata.c b/drivers/isdn/gigaset/asyncdata.c index 8601b7a8f6a..4f5dd9cf9e1 100644 --- a/drivers/isdn/gigaset/asyncdata.c +++ b/drivers/isdn/gigaset/asyncdata.c @@ -98,7 +98,7 @@ static inline int lock_loop(unsigned char *src, int numbytes, struct cardstate *cs = inbuf->cs; gigaset_dbg_buffer(DEBUG_LOCKCMD, "received response", - numbytes, src, 0); + numbytes, src); gigaset_if_receive(cs, src, numbytes); return numbytes; diff --git a/drivers/isdn/gigaset/bas-gigaset.c b/drivers/isdn/gigaset/bas-gigaset.c index b75f2f37c35..8cfd5186313 100644 --- a/drivers/isdn/gigaset/bas-gigaset.c +++ b/drivers/isdn/gigaset/bas-gigaset.c @@ -1756,7 +1756,7 @@ static int gigaset_write_cmd(struct cardstate *cs, gigaset_dbg_buffer(atomic_read(&cs->mstate) != MS_LOCKED ? DEBUG_TRANSCMD : DEBUG_LOCKCMD, - "CMD Transmit", len, buf, 0); + "CMD Transmit", len, buf); if (unlikely(!atomic_read(&cs->connected))) { err("%s: disconnected", __func__); diff --git a/drivers/isdn/gigaset/common.c b/drivers/isdn/gigaset/common.c index 5155c5b07a0..e9bfcfd9f11 100644 --- a/drivers/isdn/gigaset/common.c +++ b/drivers/isdn/gigaset/common.c @@ -79,50 +79,34 @@ __u8 gigaset_invtab[256] = { EXPORT_SYMBOL_GPL(gigaset_invtab); void gigaset_dbg_buffer(enum debuglevel level, const unsigned char *msg, - size_t len, const unsigned char *buf, int from_user) + size_t len, const unsigned char *buf) { unsigned char outbuf[80]; - unsigned char inbuf[80 - 1]; unsigned char c; - size_t numin; - const unsigned char *in; size_t space = sizeof outbuf - 1; unsigned char *out = outbuf; + size_t numin = len; - if (!from_user) { - in = buf; - numin = len; - } else { - numin = len < sizeof inbuf ? len : sizeof inbuf; - in = inbuf; - if (copy_from_user(inbuf, (const unsigned char __user *) buf, - numin)) { - gig_dbg(level, "%s (%u bytes) - copy_from_user failed", - msg, (unsigned) len); - return; - } - } - - while (numin-- > 0) { + while (numin--) { c = *buf++; if (c == '~' || c == '^' || c == '\\') { - if (space-- <= 0) + if (!space--) break; *out++ = '\\'; } if (c & 0x80) { - if (space-- <= 0) + if (!space--) break; *out++ = '~'; c ^= 0x80; } if (c < 0x20 || c == 0x7f) { - if (space-- <= 0) + if (!space--) break; *out++ = '^'; c ^= 0x40; } - if (space-- <= 0) + if (!space--) break; *out++ = c; } diff --git a/drivers/isdn/gigaset/gigaset.h b/drivers/isdn/gigaset/gigaset.h index 446a078224a..7a44caca8a1 100644 --- a/drivers/isdn/gigaset/gigaset.h +++ b/drivers/isdn/gigaset/gigaset.h @@ -154,7 +154,7 @@ enum debuglevel { /* up to 24 bits (atomic_t) */ #endif void gigaset_dbg_buffer(enum debuglevel level, const unsigned char *msg, - size_t len, const unsigned char *buf, int from_user); + size_t len, const unsigned char *buf); /* connection state */ #define ZSAU_NONE 0 diff --git a/drivers/isdn/gigaset/interface.c b/drivers/isdn/gigaset/interface.c index f3dce8c4831..25750864d20 100644 --- a/drivers/isdn/gigaset/interface.c +++ b/drivers/isdn/gigaset/interface.c @@ -246,8 +246,6 @@ static int if_ioctl(struct tty_struct *tty, struct file *file, break; case GIGASET_BRKCHARS: //FIXME test if MS_LOCKED - gigaset_dbg_buffer(DEBUG_IF, "GIGASET_BRKCHARS", - 6, (const unsigned char *) arg, 1); if (!atomic_read(&cs->connected)) { gig_dbg(DEBUG_ANY, "can't communicate with unplugged device"); @@ -257,8 +255,11 @@ static int if_ioctl(struct tty_struct *tty, struct file *file, retval = copy_from_user(&buf, (const unsigned char __user *) arg, 6) ? -EFAULT : 0; - if (retval >= 0) + if (retval >= 0) { + gigaset_dbg_buffer(DEBUG_IF, "GIGASET_BRKCHARS", + 6, (const unsigned char *) arg); retval = cs->ops->brkchars(cs, buf); + } break; case GIGASET_VERSION: retval = copy_from_user(version, diff --git a/drivers/isdn/gigaset/isocdata.c b/drivers/isdn/gigaset/isocdata.c index 0b7e5b610cc..5f2f47fdc04 100644 --- a/drivers/isdn/gigaset/isocdata.c +++ b/drivers/isdn/gigaset/isocdata.c @@ -957,11 +957,11 @@ void gigaset_isoc_input(struct inbuf_t *inbuf) if (atomic_read(&cs->mstate) == MS_LOCKED) { gigaset_dbg_buffer(DEBUG_LOCKCMD, "received response", - numbytes, src, 0); + numbytes, src); gigaset_if_receive(inbuf->cs, src, numbytes); } else { gigaset_dbg_buffer(DEBUG_CMD, "received response", - numbytes, src, 0); + numbytes, src); cmd_loop(src, numbytes, inbuf); } diff --git a/drivers/isdn/gigaset/usb-gigaset.c b/drivers/isdn/gigaset/usb-gigaset.c index e1a3eeb3c21..6ae5df5f2b6 100644 --- a/drivers/isdn/gigaset/usb-gigaset.c +++ b/drivers/isdn/gigaset/usb-gigaset.c @@ -500,7 +500,7 @@ static int gigaset_write_cmd(struct cardstate *cs, const unsigned char *buf, gigaset_dbg_buffer(atomic_read(&cs->mstate) != MS_LOCKED ? DEBUG_TRANSCMD : DEBUG_LOCKCMD, - "CMD Transmit", len, buf, 0); + "CMD Transmit", len, buf); if (!atomic_read(&cs->connected)) { err("%s: not connected", __func__); @@ -559,7 +559,7 @@ static int gigaset_brkchars(struct cardstate *cs, const unsigned char buf[6]) #ifdef CONFIG_GIGASET_UNDOCREQ struct usb_device *udev = cs->hw.usb->udev; - gigaset_dbg_buffer(DEBUG_USBREQ, "brkchars", 6, buf, 0); + gigaset_dbg_buffer(DEBUG_USBREQ, "brkchars", 6, buf); memcpy(cs->hw.usb->bchars, buf, 6); return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x19, 0x41, 0, 0, &buf, 6, 2000);