linux-kernel - [PATCH] Char: tpm_tis_spi_cr50: use new structure for SPI transfer delays

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Date:   Wed, 26 Feb 2020 13:43:47 +0200
From:   Sergiu Cuciurean <sergiu.cuciurean@...log.com>
To:     <gregkh@...uxfoundation.org>, <linux-integrity@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     <peterhuewe@....de>, <jarkko.sakkinen@...ux.intel.com>,
        <jgg@...pe.ca>, <arnd@...db.de>,
        Sergiu Cuciurean <sergiu.cuciurean@...log.com>
Subject: [PATCH] Char: tpm_tis_spi_cr50: use new structure for SPI transfer delays

In a recent change to the SPI subsystem [1], a new `delay` struct was added
to replace the `delay_usecs`. This change replaces the current
`delay_usecs` with `delay` for this driver.

The `spi_transfer_delay_exec()` function [in the SPI framework] makes sure
that both `delay_usecs` & `delay` are used (in this order to preserve
backwards compatibility).

[1] commit bebcfd272df6 ("spi: introduce `delay` field for
`spi_transfer` + spi_transfer_delay_exec()")

Signed-off-by: Sergiu Cuciurean <sergiu.cuciurean@...log.com>
---
 drivers/char/tpm/tpm_tis_spi_cr50.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/char/tpm/tpm_tis_spi_cr50.c b/drivers/char/tpm/tpm_tis_spi_cr50.c
index 37d72e818335..ea759af25634 100644
--- a/drivers/char/tpm/tpm_tis_spi_cr50.c
+++ b/drivers/char/tpm/tpm_tis_spi_cr50.c
@@ -132,7 +132,12 @@ static void cr50_wake_if_needed(struct cr50_spi_phy *cr50_phy)
 
 	if (cr50_needs_waking(cr50_phy)) {
 		/* Assert CS, wait 1 msec, deassert CS */
-		struct spi_transfer spi_cs_wake = { .delay_usecs = 1000 };
+		struct spi_transfer spi_cs_wake = {
+			.delay = {
+				.value = 1000,
+				.unit = SPI_DELAY_UNIT_USECS
+			}
+		};
 
 		spi_sync_transfer(phy->spi_device, &spi_cs_wake, 1);
 		/* Wait for it to fully wake */
-- 
2.17.1