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authorJavier Martinez Canillas <javierm@redhat.com>2017-12-25 03:22:49 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-03-15 10:56:57 +0100
commit191f9cb91d12459d76ae2b85594ffa065aafd77d (patch)
tree5bdd21ec41bd1f62098b9094ab840932829edb23
parent8fa99a629bd77a44e3b36801b16cb5a02e5fc3e0 (diff)
tpm: delete the TPM_TIS_CLK_ENABLE flag
commit 764325add6c2ad1641199edde7b2995495fc2d7c upstream. This flag is only used to warn if CLKRUN_EN wasn't disabled on Braswell systems, but the only way this can happen is if the code is not correct. So it's an unnecessary check that just makes the code harder to read. Suggested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/char/tpm/tpm_tis.c15
-rw-r--r--drivers/char/tpm/tpm_tis_core.c2
-rw-r--r--drivers/char/tpm/tpm_tis_core.h1
3 files changed, 0 insertions, 18 deletions
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index c847fc69a2fc..4b73e28458e3 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -138,9 +138,6 @@ static int tpm_tcg_read_bytes(struct tpm_tis_data *data, u32 addr, u16 len,
{
struct tpm_tis_tcg_phy *phy = to_tpm_tis_tcg_phy(data);
- if (is_bsw() && !(data->flags & TPM_TIS_CLK_ENABLE))
- WARN(1, "CLKRUN not enabled!\n");
-
while (len--)
*result++ = ioread8(phy->iobase + addr);
@@ -152,9 +149,6 @@ static int tpm_tcg_write_bytes(struct tpm_tis_data *data, u32 addr, u16 len,
{
struct tpm_tis_tcg_phy *phy = to_tpm_tis_tcg_phy(data);
- if (is_bsw() && !(data->flags & TPM_TIS_CLK_ENABLE))
- WARN(1, "CLKRUN not enabled!\n");
-
while (len--)
iowrite8(*value++, phy->iobase + addr);
@@ -165,9 +159,6 @@ static int tpm_tcg_read16(struct tpm_tis_data *data, u32 addr, u16 *result)
{
struct tpm_tis_tcg_phy *phy = to_tpm_tis_tcg_phy(data);
- if (is_bsw() && !(data->flags & TPM_TIS_CLK_ENABLE))
- WARN(1, "CLKRUN not enabled!\n");
-
*result = ioread16(phy->iobase + addr);
return 0;
@@ -177,9 +168,6 @@ static int tpm_tcg_read32(struct tpm_tis_data *data, u32 addr, u32 *result)
{
struct tpm_tis_tcg_phy *phy = to_tpm_tis_tcg_phy(data);
- if (is_bsw() && !(data->flags & TPM_TIS_CLK_ENABLE))
- WARN(1, "CLKRUN not enabled!\n");
-
*result = ioread32(phy->iobase + addr);
return 0;
@@ -189,9 +177,6 @@ static int tpm_tcg_write32(struct tpm_tis_data *data, u32 addr, u32 value)
{
struct tpm_tis_tcg_phy *phy = to_tpm_tis_tcg_phy(data);
- if (is_bsw() && !(data->flags & TPM_TIS_CLK_ENABLE))
- WARN(1, "CLKRUN not enabled!\n");
-
iowrite32(value, phy->iobase + addr);
return 0;
diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c
index 034561a69304..6e63815990e2 100644
--- a/drivers/char/tpm/tpm_tis_core.c
+++ b/drivers/char/tpm/tpm_tis_core.c
@@ -698,7 +698,6 @@ static void tpm_tis_clkrun_enable(struct tpm_chip *chip, bool value)
return;
if (value) {
- data->flags |= TPM_TIS_CLK_ENABLE;
data->clkrun_enabled++;
if (data->clkrun_enabled > 1)
return;
@@ -729,7 +728,6 @@ static void tpm_tis_clkrun_enable(struct tpm_chip *chip, bool value)
* sure LPC clock is running before sending any TPM command.
*/
outb(0xCC, 0x80);
- data->flags &= ~TPM_TIS_CLK_ENABLE;
}
}
diff --git a/drivers/char/tpm/tpm_tis_core.h b/drivers/char/tpm/tpm_tis_core.h
index afc50cde1ba6..d5c6a2e952b3 100644
--- a/drivers/char/tpm/tpm_tis_core.h
+++ b/drivers/char/tpm/tpm_tis_core.h
@@ -86,7 +86,6 @@ enum tis_defaults {
enum tpm_tis_flags {
TPM_TIS_ITPM_WORKAROUND = BIT(0),
- TPM_TIS_CLK_ENABLE = BIT(1),
};
struct tpm_tis_data {