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 <sampaio.ime@gmail.com>
Link: https://lore.kernel.org/r/20210519223046.13798-5-sampaio.ime@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/w1/slaves/w1_ds2438.c b/drivers/w1/slaves/w1_ds2438.c
index 5cfb0ae23e916c78e1f34bc4754b42071134cf1f..5698566b0ee014e02bbc8d9b73c2cea46deeca1b 100644 (file)
--- 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);