From: akpm@linux-foundation.org
To: isdn@linux-pingi.de
Cc: netdev@vger.kernel.org, akpm@linux-foundation.org,
jirislaby@gmail.com, armin@melware.de
Subject: [patch 5/6] isdn: eicon, use offsetof
Date: Fri, 18 Sep 2009 12:53:05 -0700 [thread overview]
Message-ID: <200909181953.n8IJr5h3026316@imap1.linux-foundation.org> (raw)
From: Jiri Slaby <jirislaby@gmail.com>
Use offsetof instead of explicit implementation.
* fixes bug with omitted & like:
len = (byte)(((T30_INFO *) 0)->station_id + 20)
* avoids compiler warnings with wrong sizes (pointer-to-char cast):
len = (byte)(&(((T30_INFO *) 0)->universal_6));
* cleans up the code
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Karsten Keil <isdn@linux-pingi.de>
Acked-by: Armin Schindler <armin@melware.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
drivers/isdn/hardware/eicon/message.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
diff -puN drivers/isdn/hardware/eicon/message.c~isdn-eicon-use-offsetof drivers/isdn/hardware/eicon/message.c
--- a/drivers/isdn/hardware/eicon/message.c~isdn-eicon-use-offsetof
+++ a/drivers/isdn/hardware/eicon/message.c
@@ -2692,7 +2692,7 @@ static byte connect_b3_req(dword Id, wor
if (!(fax_control_bits & T30_CONTROL_BIT_MORE_DOCUMENTS)
|| (fax_feature_bits & T30_FEATURE_BIT_MORE_DOCUMENTS))
{
- len = (byte)(&(((T30_INFO *) 0)->universal_6));
+ len = offsetof(T30_INFO, universal_6);
fax_info_change = false;
if (ncpi->length >= 4)
{
@@ -2754,7 +2754,7 @@ static byte connect_b3_req(dword Id, wor
for (i = 0; i < w; i++)
((T30_INFO *)(plci->fax_connect_info_buffer))->station_id[i] = fax_parms[4].info[1+i];
((T30_INFO *)(plci->fax_connect_info_buffer))->head_line_len = 0;
- len = (byte)(((T30_INFO *) 0)->station_id + 20);
+ len = offsetof(T30_INFO, station_id) + 20;
w = fax_parms[5].length;
if (w > 20)
w = 20;
@@ -2788,7 +2788,7 @@ static byte connect_b3_req(dword Id, wor
}
else
{
- len = (byte)(&(((T30_INFO *) 0)->universal_6));
+ len = offsetof(T30_INFO, universal_6);
}
fax_info_change = true;
@@ -2892,7 +2892,7 @@ static byte connect_b3_res(dword Id, wor
&& (plci->nsf_control_bits & T30_NSF_CONTROL_BIT_ENABLE_NSF)
&& (plci->nsf_control_bits & T30_NSF_CONTROL_BIT_NEGOTIATE_RESP))
{
- len = ((byte)(((T30_INFO *) 0)->station_id + 20));
+ len = offsetof(T30_INFO, station_id) + 20;
if (plci->fax_connect_info_length < len)
{
((T30_INFO *)(plci->fax_connect_info_buffer))->station_id_len = 0;
@@ -3802,7 +3802,7 @@ static byte manufacturer_res(dword Id, w
break;
}
ncpi = &m_parms[1];
- len = ((byte)(((T30_INFO *) 0)->station_id + 20));
+ len = offsetof(T30_INFO, station_id) + 20;
if (plci->fax_connect_info_length < len)
{
((T30_INFO *)(plci->fax_connect_info_buffer))->station_id_len = 0;
@@ -6844,7 +6844,7 @@ static void nl_ind(PLCI *plci)
if ((plci->requested_options_conn | plci->requested_options | a->requested_options_table[plci->appl->Id-1])
& ((1L << PRIVATE_FAX_SUB_SEP_PWD) | (1L << PRIVATE_FAX_NONSTANDARD)))
{
- i = ((word)(((T30_INFO *) 0)->station_id + 20)) + ((T30_INFO *)plci->NL.RBuffer->P)->head_line_len;
+ i = offsetof(T30_INFO, station_id) + 20 + ((T30_INFO *)plci->NL.RBuffer->P)->head_line_len;
while (i < plci->NL.RBuffer->length)
plci->ncpi_buffer[++len] = plci->NL.RBuffer->P[i++];
}
@@ -7236,7 +7236,7 @@ static void nl_ind(PLCI *plci)
{
plci->RData[1].P = plci->RData[0].P;
plci->RData[1].PLength = plci->RData[0].PLength;
- plci->RData[0].P = v120_header_buffer + (-((int) v120_header_buffer) & 3);
+ plci->RData[0].P = v120_header_buffer + (-((unsigned long)v120_header_buffer) & 3);
if ((plci->NL.RBuffer->P[0] & V120_HEADER_EXTEND_BIT) || (plci->NL.RLength == 1))
plci->RData[0].PLength = 1;
else
@@ -8473,7 +8473,7 @@ static word add_b23(PLCI *plci, API_PARS
fax_control_bits |= T30_CONTROL_BIT_ACCEPT_SEL_POLLING;
}
len = nlc[0];
- pos = ((byte)(((T30_INFO *) 0)->station_id + 20));
+ pos = offsetof(T30_INFO, station_id) + 20;
if (pos < plci->fax_connect_info_length)
{
for (i = 1 + plci->fax_connect_info_buffer[pos]; i != 0; i--)
@@ -8525,7 +8525,7 @@ static word add_b23(PLCI *plci, API_PARS
}
PUT_WORD(&(((T30_INFO *)&nlc[1])->control_bits_low), fax_control_bits);
- len = ((byte)(((T30_INFO *) 0)->station_id + 20));
+ len = offsetof(T30_INFO, station_id) + 20;
for (i = 0; i < len; i++)
plci->fax_connect_info_buffer[i] = nlc[1+i];
((T30_INFO *) plci->fax_connect_info_buffer)->head_line_len = 0;
_
reply other threads:[~2009-09-18 20:02 UTC|newest]
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