tree 7c51bd027a4e82ed374b1114890bd86f1e558367 parent c181e0e00ff778623c7fda055fd404a06d2c7845 author Daniel Ritz <[EMAIL PROTECTED]> Sat, 10 Sep 2005 03:03:25 -0700 committer Linus Torvalds <[EMAIL PROTECTED]> Sat, 10 Sep 2005 03:57:47 -0700
[PATCH] pcmcia/yenta: avoid PCI write posting problem extend cb_writel(), exca_writeb(), exca_writel() to do a read[lb]() after the write[lb]() to avoid possible problem with PCI write posting. Seems to fix Bug #5061. Signed-off-by: Daniel Ritz <[EMAIL PROTECTED]> Cc: Dominik Brodowski <[EMAIL PROTECTED]> Signed-off-by: Andrew Morton <[EMAIL PROTECTED]> Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]> drivers/pcmcia/yenta_socket.c | 6 ++++++ 1 files changed, 6 insertions(+) diff --git a/drivers/pcmcia/yenta_socket.c b/drivers/pcmcia/yenta_socket.c --- a/drivers/pcmcia/yenta_socket.c +++ b/drivers/pcmcia/yenta_socket.c @@ -72,6 +72,7 @@ static inline void cb_writel(struct yent { debug("%p %04x %08x\n", socket, reg, val); writel(val, socket->base + reg); + readl(socket->base + reg); /* avoid problems with PCI write posting */ } static inline u8 config_readb(struct yenta_socket *socket, unsigned offset) @@ -136,6 +137,7 @@ static inline void exca_writeb(struct ye { debug("%p %04x %02x\n", socket, reg, val); writeb(val, socket->base + 0x800 + reg); + readb(socket->base + 0x800 + reg); /* PCI write posting... */ } static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val) @@ -143,6 +145,10 @@ static void exca_writew(struct yenta_soc debug("%p %04x %04x\n", socket, reg, val); writeb(val, socket->base + 0x800 + reg); writeb(val >> 8, socket->base + 0x800 + reg + 1); + + /* PCI write posting... */ + readb(socket->base + 0x800 + reg); + readb(socket->base + 0x800 + reg + 1); } /* - To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html