diff options
author | wwang <wei_wang@realsil.com.cn> | 2011-01-21 17:39:18 +0800 |
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committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-01-21 12:11:02 -0800 |
commit | 77d89b08766c878a2594b15d203e513acf952340 (patch) | |
tree | c3c1b3c8be54a5968811a7db5039bca92bf16e5e /drivers/staging/rts_pstor/general.c | |
parent | 88c8a4437b061dd9dae738802a9eddc297a96278 (diff) | |
download | linux-77d89b08766c878a2594b15d203e513acf952340.tar.bz2 |
staging: add rts_pstor for Realtek PCIE cardreader
rts_pstor is used to support Realtek PCI-E card readers,
including rts5209, rts5208, Barossa.
Signed-off-by: wwang <wei_wang@realsil.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/rts_pstor/general.c')
-rw-r--r-- | drivers/staging/rts_pstor/general.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/staging/rts_pstor/general.c b/drivers/staging/rts_pstor/general.c new file mode 100644 index 000000000000..056e98d2475c --- /dev/null +++ b/drivers/staging/rts_pstor/general.c @@ -0,0 +1,35 @@ +/* Driver for Realtek PCI-Express card reader + * + * Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see <http://www.gnu.org/licenses/>. + * + * Author: + * wwang (wei_wang@realsil.com.cn) + * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China + */ + +#include "general.h" + +int bit1cnt_long(u32 data) +{ + int i, cnt = 0; + for (i = 0; i < 32; i++) { + if (data & 0x01) + cnt++; + data >>= 1; + } + return cnt; +} + |