From 68ce66ba20cf1e4812fcae66100af44b3bb3f09b Mon Sep 17 00:00:00 2001 From: Luiz Sampaio Date: Wed, 19 May 2021 19:30:44 -0300 Subject: [PATCH] w1: ds2438: fixing bug that would always get page0 [ Upstream commit 1f5e7518f063728aee0679c5086b92d8ea429e11 ] The purpose of the w1_ds2438_get_page function is to get the register values at the page passed as the pageno parameter. However, the page0 was hardcoded, such that the function always returned the page0 contents. Fixed so that the function can retrieve any page. Signed-off-by: Luiz Sampaio Link: https://lore.kernel.org/r/20210519223046.13798-5-sampaio.ime@gmail.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/w1/slaves/w1_ds2438.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/w1/slaves/w1_ds2438.c b/drivers/w1/slaves/w1_ds2438.c index d199e5a25cc0..404dacb15004 100644 --- a/drivers/w1/slaves/w1_ds2438.c +++ b/drivers/w1/slaves/w1_ds2438.c @@ -62,13 +62,13 @@ static int w1_ds2438_get_page(struct w1_slave *sl, int pageno, u8 *buf) if (w1_reset_select_slave(sl)) continue; w1_buf[0] = W1_DS2438_RECALL_MEMORY; - w1_buf[1] = 0x00; + w1_buf[1] = (u8)pageno; w1_write_block(sl->master, w1_buf, 2); if (w1_reset_select_slave(sl)) continue; w1_buf[0] = W1_DS2438_READ_SCRATCH; - w1_buf[1] = 0x00; + w1_buf[1] = (u8)pageno; w1_write_block(sl->master, w1_buf, 2); count = w1_read_block(sl->master, buf, DS2438_PAGE_SIZE + 1);