From: Finn Thain <fthain@telegraphics.com.au> To: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Joshua Thompson <funaho@jurai.org>, Geert Uytterhoeven <geert@linux-m68k.org>, linux-m68k@lists.linux-m68k.org, Laurent Vivier <lvivier@redhat.com>, Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/9] macintosh/via-macii: Access autopoll_devs when inside lock Date: Sun, 28 Jun 2020 14:23:12 +1000 [thread overview] Message-ID: <5952dd8a9bc9de90f1acc4790c51dd42b4c98065.1593318192.git.fthain@telegraphics.com.au> (raw) In-Reply-To: <cover.1593318192.git.fthain@telegraphics.com.au> The interrupt handler should be excluded when accessing the autopoll_devs variable. Fixes: d95fd5fce88f0 ("m68k: Mac II ADB fixes") # v5.0+ Tested-by: Stan Johnson <userm57@yahoo.com> Signed-off-by: Finn Thain <fthain@telegraphics.com.au> --- drivers/macintosh/via-macii.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/macintosh/via-macii.c b/drivers/macintosh/via-macii.c index ac824d7b2dcfc..6aa903529570d 100644 --- a/drivers/macintosh/via-macii.c +++ b/drivers/macintosh/via-macii.c @@ -270,15 +270,12 @@ static int macii_autopoll(int devs) unsigned long flags; int err = 0; + local_irq_save(flags); + /* bit 1 == device 1, and so on. */ autopoll_devs = devs & 0xFFFE; - if (!autopoll_devs) - return 0; - - local_irq_save(flags); - - if (current_req == NULL) { + if (autopoll_devs && !current_req) { /* Send a Talk Reg 0. The controller will repeatedly transmit * this as long as it is idle. */ -- 2.26.2
WARNING: multiple messages have this Message-ID (diff)
From: Finn Thain <fthain@telegraphics.com.au> To: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Laurent Vivier <lvivier@redhat.com>, Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, Geert Uytterhoeven <geert@linux-m68k.org>, linuxppc-dev@lists.ozlabs.org, Joshua Thompson <funaho@jurai.org> Subject: [PATCH 1/9] macintosh/via-macii: Access autopoll_devs when inside lock Date: Sun, 28 Jun 2020 14:23:12 +1000 [thread overview] Message-ID: <5952dd8a9bc9de90f1acc4790c51dd42b4c98065.1593318192.git.fthain@telegraphics.com.au> (raw) In-Reply-To: <cover.1593318192.git.fthain@telegraphics.com.au> The interrupt handler should be excluded when accessing the autopoll_devs variable. Fixes: d95fd5fce88f0 ("m68k: Mac II ADB fixes") # v5.0+ Tested-by: Stan Johnson <userm57@yahoo.com> Signed-off-by: Finn Thain <fthain@telegraphics.com.au> --- drivers/macintosh/via-macii.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/macintosh/via-macii.c b/drivers/macintosh/via-macii.c index ac824d7b2dcfc..6aa903529570d 100644 --- a/drivers/macintosh/via-macii.c +++ b/drivers/macintosh/via-macii.c @@ -270,15 +270,12 @@ static int macii_autopoll(int devs) unsigned long flags; int err = 0; + local_irq_save(flags); + /* bit 1 == device 1, and so on. */ autopoll_devs = devs & 0xFFFE; - if (!autopoll_devs) - return 0; - - local_irq_save(flags); - - if (current_req == NULL) { + if (autopoll_devs && !current_req) { /* Send a Talk Reg 0. The controller will repeatedly transmit * this as long as it is idle. */ -- 2.26.2
next prev parent reply other threads:[~2020-06-28 4:32 UTC|newest] Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-06-28 4:23 [PATCH 0/9] Macintosh II ADB driver fixes Finn Thain 2020-06-28 4:23 ` Finn Thain 2020-06-28 4:23 ` [PATCH 7/9] macintosh/via-macii: Use unsigned type for autopoll_devs variable Finn Thain 2020-06-28 4:23 ` Finn Thain 2020-06-28 4:23 ` [PATCH 2/9] macintosh/via-macii: Poll the device most likely to respond Finn Thain 2020-06-28 4:23 ` Finn Thain 2020-08-09 18:55 ` Guenter Roeck 2020-08-09 18:55 ` Guenter Roeck 2020-08-09 22:58 ` Finn Thain 2020-08-09 22:58 ` Finn Thain 2020-08-10 1:16 ` Guenter Roeck 2020-08-10 1:16 ` Guenter Roeck 2020-06-28 4:23 ` [PATCH 6/9] macintosh/via-macii: Use bool type for reading_reply variable Finn Thain 2020-06-28 4:23 ` Finn Thain 2020-06-28 4:23 ` Finn Thain [this message] 2020-06-28 4:23 ` [PATCH 1/9] macintosh/via-macii: Access autopoll_devs when inside lock Finn Thain 2020-08-09 19:01 ` Guenter Roeck 2020-08-09 19:01 ` Guenter Roeck 2020-08-09 23:15 ` Finn Thain 2020-08-09 23:15 ` Finn Thain 2020-06-28 4:23 ` [PATCH 9/9] macintosh/via-macii: Clarify definition of macii_init() Finn Thain 2020-06-28 4:23 ` Finn Thain 2020-06-28 4:23 ` [PATCH 5/9] macintosh/via-macii: Handle poll replies correctly Finn Thain 2020-06-28 4:23 ` Finn Thain 2020-06-28 4:23 ` [PATCH 4/9] macintosh/via-macii: Remove read_done state Finn Thain 2020-06-28 4:23 ` Finn Thain 2020-06-28 4:23 ` [PATCH 3/9] macintosh/via-macii: Handle /CTLR_IRQ signal correctly Finn Thain 2020-06-28 4:23 ` Finn Thain 2020-06-28 4:23 ` [PATCH 8/9] macintosh/via-macii: Use the stack for reset request storage Finn Thain 2020-06-28 4:23 ` Finn Thain 2020-07-27 7:26 ` [PATCH 0/9] Macintosh II ADB driver fixes Michael Ellerman 2020-07-27 7:26 ` Michael Ellerman
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